Jacqueline is a speedster with extensive experience and significant training, as detailed in previous entries. She has a few new tricks - she can jump much further, force locks open by vibrating her hand in front of them, run further along vertical surfaces, etc. The main change is that she reveals at that point her quasi-vampiric nature.

When she discovered their existence is unclear - probably during the mid-2000s - but she apparently never used them before the desperate circumstances of the Skrull invasion. Though she considered the notion that she had vampire traits disturbing, gross and unladylike, using them against the Skrulls did not have any particular consequence — and she slowly grew to accept them, particularly after the received training from Blade.

Said vampiric powers include superhuman strength, ripping the throat out of opponents with a vampire’s bite, morphing her fingers into claws (which are not large enough to improve her EV beyond her STR or Superspeed, though - in game terms it’s just cosmetic) and operating on the surface of the Moon without any specialised gear. Blade is also training her to use her supernatural senses, such as smelling the presence of other vampires, and seems certain that Jac will never age and is immortal barring violent death.

As a vampire, Jackie is very hard to destroy and able to ignore massive tissue loss (Invulnerability, Stabilisation). She could still use her arm and hand even with that hand, wrist and forearm stripped of their meat - but having her actual joints and her spine shattered immobilised her. Blade showed her that she could, at the cost of considerable effort and pain, reconstruct destroyed tissues from nowhere (Wound Rejection) - muscle, skin, cartilage, marrow, bone, etc. all within a single Phase. The same process allow Spiitfire to recover from a broken neck within seconds, though that takes a lot of effort and pain.

There will be blood

Jac’s nature, and the timing of the appearance of her vampire abilities, are both unclear. It is possible to make some educated guesses, but as usual we’ll insist that those are just guesses on our part.

• The infection starts in 1942, with a series of bites from Baron Blood. Normally, vampiric ichor replaces the blood over three days of death. In Falsworth’s case, she did not die and ichor did not replace her blood - even using 1940s technology and in wartime, doctors would have noticed either of these. The Torch’s synthetic “blood” reacted to the vampiric compounds in her blood (which may not have been standard, since Baron Blood is an altered vampire) and gave her super-speed, but apparently the ichor was still there.
• Either she was turned in 1942 in a unique, aberrant way (without dying, without ichor colonisation, etc.) or the ichor gradually turned her into a sort of vampire over an unclear period of time. It may have taken the usual three days, or it may have taken 60+ years. The process might have restarted after the second transfusion, restoring her body right as it was hours after having been fatally bitten. There’s no way to tell. Given her unusual nature she may have been a vampire for six decades and half without noticing it - for instance her fangs are fully retractile, and may have remained in retracted position despite being there all along.
• The guess that feels the most correct is that exposure to the bite of Baroness Blood is what finally activated Jac’s dormant vampiric nature, but it’s no more supported than the rest. Perhaps the insufficient quantities of vampiric ichor remained in her body, undying and fighting her altered blood, all along until given a push by the Baroness to turn her into an abnormal vampire.
• Spitfire is an unique creature. In some ways she vaguely resembles Dr. Morbius - the Living Vampire - but Dr. Hussain has established that she’s a magical creature, unlike Morbius. In some other ways, she’s loosely comparable to a Daywalker such as Blade - but really, she’s one of a kind.
• This is particularly evident in the fact that Jac doesn’t present the traditional vampiric issues (crucifixes, running water, invitation, soil, etc. etc.) with but one exception - being staked in the heart by a professional. Her regenerative properties do not apply against this specific kind of wound (she would have been destroyed without Dr. Hussain’s intervention) and a mystical disruption was obviously at work as her flesh started disintegrating.
• Most interestingly, she wasn’t subject to Count Dracula’s mesmerism, which normally gives him dominion over all vampires.

History

After the New Invaders fell apart and she and Joey Chapman amicably ended their romance, the Lady Crichton presumably resumed her activities as a special agent for the Crown. She almost certainly worked for “thirteen” (Military Intelligence, Service 13 - paranormal intelligence) whereas Union Jack worked for “five” (MI5 - counterintelligence). Being something of an elder stateswoman of British superhumans and a senior MI13 agent, Spitfire was on excellent terms with almost all other British super-heroes.

Her vampiric nature was apparently revealed during that time, in unchronicled circumstances. Only Peter Wisdom and Joey Chapman knew of it, though, and both considered Jacqueline Falsworth to be very unlikely to ever lose control of her condition.

Secret Invasion

In 2008, the British Isles were hit hard by the worldwide Skrull invasion. The Skrulls wanted to pillage mystic resources there, and in particular the connections with the mystical dimension of Avalon. As conventional forces engaged the aliens with mixed success, superhuman combat resources were placed under the authority of MI13’s Peter Wisdom. When Wisdom realised that the Skrulls were angling to storm the Siege Perilous, he formed a special commando.

Captain Britain, Peter Wisdom and “John Lennon” of the Skrull Beatles were flown to the site and Spitfire, then busy fighting Skrulls on several fronts, was requested to join them. As it became obvious that the UK might soon be overwhelmed and conquered, Spitfire had started using her vampire-like abilities to fight, despite her normal reluctance to do so.

After the apparent demise of Captain Britain, the rest of the team entered Avalon to honour the mutual defence treaty between the UK and the Otherworld by helping repel the Skrull invaders there. The commando team found the mythical Excalibur sword — but with Captain Britain gone none could draw it, and Jacqueline refused to even touch it for obvious reasons. Spitfire continued to fight in the defence of Avalon past the stage where the war was lost, and John the Skrull perished while fighting in a delaying action. The time Jacqueline and John thus bought allowed Captain Britain to return, then to make it to London with Excalibur in hand.

Spitfire and Wisdom remained behind in Otherworld as captives of the Skrulls, but back on Earth Captain Britain destroyed the Skrull equipment holding the pilfered mystical puissance. The magic flowed back to Avalon, suddenly re-arming the forces there — which turned the tide of the war and saved Falsworth and Wisdom

Wisdom then finished sealing a pact with evil mystical forces, which destroyed all Skrulls within the UK but also freed a number of menaces imprisoned through centuries of heroic efforts.

Anarchy in the UK

In the aftermath of those catastrophic events, Wisdom took steps against the dangers he had been forced to unleash. Captain Britain suggested that MI13 organise a main team - not of businesslike intelligence officers, but of real heroes banding for a good cause and because they were friends. Wisdom agreed and assembled such a team, with Spitfire as one of the core members.

Peter Wisdom also recruited British international adventurer Blade (Eric Brooks) as a supernatural warfare expert. As they flew to the site of their first mission, Blade sensed Spitfire’s nature and staked her. Dr. Hussain narrowly saved the Lady Crichton, and Wisdom ordered Blade hunted down and captured. Though Wisdom wanted Falsworth to hold back and recover, she entered the mission site since she was the most able to save civilians trapped there by an infernal incursion.

While intervening, Spitfire again ran into Blade and they started fighting. However, the two came to realise that they were both in full control of their vampiric condition and did not pose a threat to humans, and declared a truce. They then worked on stemming the invasion of Mindless Ones that was coming through infernal gates.

Whilst discussing with Brooks, Crichton learned that the Daywalker recently had accidentally brought back vampires to Earth - which meant that her son Kenneth might have been restored to unlife. Since having Kenneth back was her fondest desire and their Hell-cursed environment was feeding off exactly that, Spitfire briefly lost consciousness and fell to the bottom of an elevator shaft. Though her body was shattered, Blade showed her how to push her vampiric abilities to supernaturally reconstruct her bones and organs.

Spitfire and Blade did not just make peace — Spitfire asked Wisdom to forget about the whole staking thing and have Blade back on the team, and she and Brooks impulsively started a relationship.

Blade proved to be valuable beyond being a team-mate and lover, as he taught Spitfire a lot about her quasi-vampiric abilities and helped her to better come to term with the Falsworths’s tragic history with vampires — in particular in gaining some closure about Kenneth and John.

This knowledge and sense of closure would prove a significant asset for the survival of Great Britain mere days later — as they played an important role in what may have been, remarkably enough, Peter Wisdom’s most dastardly plan ever.

Vampire state

From the Moon and with a number of potent allies, Dracula prepared to conquer Great Britain. The earliest stages of his plan involved destroying Britain’s superhuman defenders, which chiefly meant MI13 agents. Spitfire was an important objective - Dracula was aware that she was a vampire, and wished to make her one of his agents. Not only was she a super-powered vampire, but she was also a noble, and Dracula’s antiquated values meant that he wanted nobles to rule over the UK once it had been conquered.

The Lord of Vampires sent Baron Blood (Kenneth Crichton), who had indeed been recreated due to Blade’s mistake, to convince Spitfire to come to him. Dracula was confident that he could then mesmerise the Lady Crichton into serving him, given his dominion over Earth’s vampires.

Dracula’s plan seemed to work perfectly, but it was a trap. After long discussions with Blade, Spitfire had come to terms with the necessity of destroying the vampire that had once been her son. Her intelligence training, the fact that she wasn’t a normal vampire and the Lord of Vampires’s confidence that she loved her son above anything else, allowed her to dupe Baron Blood and fake falling under the domination of Dracula.

Dracula was very pleased with how nicely things seemed to go, and Spitfire kept gaining importance in his plans — which allowed the Lady Crichton to gather much intelligence. Unfortunately, to maintain cover, she had to kill and vamp a human being for the first (and hopefully last) time. British forces then executed a successful strike against Dracula’s flying ship during which they exfiltrated Spitfire, though Captain Britain had to drag her to leave the ship as she wanted to attack Dracula right now.

Falsworth-Crichton was debriefed by Wisdom, and though seeing her son, murdering an innocent and drinking blood had been harrowing for her, she maintained an admirable measure of stiff upper lip. After Wisdom’s trap-within-a-trap-within-a-trap-within-a-trap destroyed Dracula’s forces, Spitfire resumed her role as a MI13 superhuman combat agent.

A counter-attack was launched on Dracula’s castle on the moon, with Spitfire and a cadre of MI13 heavies (Dark Angel, Tangerine, Digitek and Death’s Head) spearheading for a Sabre Squadron of the Special Air Service. Meanwhile, other units struck at the castle’s key installations based on the intelligence previously gathered by Spitfire.

One such strike team was made up of Union Jack (Joey Chapman) and Blade, who as planned encountered Baron Blood. Kenneth Crichton surrendered, and Union Jack was welcoming this opportunity to save his old friend when Blade staked Blood from behind, dusting him. To Union Jack’s shock, Blade then confirmed the kill to Spitfire over the radio. Jacqueline has resolved to see “Kenneth” destroyed, but asked Blade to do it in her stead as she couldn’t bring herself to do it.

Union Jack, shocked by this development, stopped associating with Spitfire for a while ; Jacqueline herself, even with Blade’s support, took a while to accept what had been done — but the most painful episode of her life was over at last.

On Her Majesty’s secret service

The Lady Crichton continued to work for MI13, often with her lover Blade. One documented mission took place in New York City, where they tracked down and destroyed a British vampire who had sold British secrets to hostile powers since at least World War Two, and was currently working for Mys-tech.

Jackie also rejoined the Invaders when the team was reassembled as a result of magical manipulations. Practically the whole roster was still alive or back among the living at that point - Steve Rogers, James Buchanan Barnes, Jim Hammond, Thomas Raymond, Prince Namor of Atlantis - and Joey Chapman volunteered to represent Union Jack at Spitfire’s side. The reunited Invaders prevented an incursion by the elder god Shuma-Gorath and put to rest the memories of an horrible case they had been involved with in Netherlands in 1945.

Description

Late during the New Invaders run, Spitfire stated that her ageing was now progressing at a faster-than-normal rate and catching up with her. That issue seems to have been solved, presumably thanks to her vampire-like qualities, as she looks to be at most in her late teens or early twenties.

Personality

Jacqueline comes across as being more professional, collected and determined than before. There is now a military cast to her demeanour and discipline, and it would seem she has chiefly worked with the military and special agencies for the last few years, influencing her experience and mannerisms.

Though the past seems to hinder her much less than it used to do, Jac still likes to tell anecdotes and make references to things that happened decades ago — when she tells about something Churchill did in 1955, it seems she’s referring to something that happened last week. Nevertheless, she does not feel old anymore, except in very specific cases. She definitely still behaves as a noble and is proud of it (in an understated way, of course), but when she says dated and very old school things, it’s usually intended as a joke or as a flirt. She’s playful, vital, not quite interested in staying single, likes to party, and is definitely a part of the English pub culture.

Spitfire has remarkable willpower and determination, and is now every bit as tough, resourceful and determined as her legendary dad was. She’s a Falsworth - she will not be dominated, intimidated or ruled by anything other than her own sense of familial honour and patriotic duty. This commitment may be linked to her realisation that she’s the last Falsworth who will ever exist, and perhaps the last Crichton. She always maintains appearances and good manners, even if she’s furious or distraught - though she will allow close friends to see her expressing anger and other emotions.

Jackie enjoys making old-fashioned remarks and using deliciously dated BritishisMs. While she was making one of those “in character” jokes, Blade compared her accent to “something out of a sixties horror movie”, and another occasion described her as playing Mary Poppins. It may be a way for her to make fun of her own Britishness, but at the same time she seems genuinely attached to these old mores and manners of speaking. Determining whether any given use of a quaint turn of phrase is done in jest or seriously can be difficult for foreigners. Worse, the areas in which she’s the most likely to use old-fashioned terms and turns of phrase are the ones about which she’s deathly serious - honour and patriotism.

Her ladyship is a staunch patriot, even by 1940s standards. This is not about boisterous words and flag-waving (she’s English !), but about actions and values. She’s quite fiery on that point when it comes up (usually because of a matter of treason), and it can occasionally brings out a typical old person tirade about “the yoofs of today holding nothing sacred”, which is amusing given her fresh-faced appearance. 

Being a sort of vampire, Jackie is haunted by a desire to drink blood, presumably akin to some deep-seated addictions. She is consistently able to resist this to the point people won’t notice anything, and of course she will never complain about it - at worse she’ll describe it as a bit of a bother. Training with Blade seems to have made these urges go away.