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Rebooted version of Cosmic Boy

Cosmic Boy

Post-Reboot version

Power Level:
Game system: DC Heroes Role-Playing Game


  • Real Name: Rokk Krinn
  • Known Relatives: Pol Krinn (brother), (mother), (father)
  • Base Of Operations: Metropolis, Earth
  • Group Affiliation: LSH
  • Home Planet: Braal

Powers and Abilities

Cos’ mastery of magnetism is greater than most Braalians. He has sufficient dexterity to be a championship Magno-Ball player, and great Leadership skills.


The planet Braal had few things to be happy about before the creation of the United Planets. Its economy was perpetually mired in depression and it was involved in a ruinous war with the planet Titan.

The one bright light in Braal’s situation was the extremely popular sport of magno-ball, which, despite the fact that only Braalians could play it, was a showcase of the Cosmic Games.

The embodiment of this spark of optimism is Rokk Krinn, the magno-ball champion so dominant, he was nicknamed “Cosmic Boy.” After his success in the games, he was set to on a tour of the newly-formed United Planets, of which both Braal and its enemy Titan were members, but his tour ended on its first stop, Earth, where he, Titanian Imra Ardeen, and Winathian Garth Ranzz stopped the attempted murder of Stargate tycoon R.J. Brande.

Brande contacted him (and the other two) and brought them together to form the Legion of Super-Heroes. In the process, Brande did him the favor of bringing his manager Cuspin within range of Imra, who discovered his embezzling of Rokk’s earnings.

The three youths accepted Brande’s offer to personify to United Planets as teenaged goodwill ambassadors, and Rokk was chosen leader of the team twice…once by the team’s consensus, and once by Leviathan, the UP-appointed leader who, after the death of Kid Quantum, ceded the leadership.

Shortly after the Legion’s fight against the Composite Man, Rokk encountered Doctor Micah Aven of Titan, who expressed a suspicion that U.P. President Chu was manipulating the Legion for her own purposes and had done similar things before…including the engineering of the original Braal-Titan war.

After the President began exercising more control over the Legion following the death of Apparition in battle against the White Triangle, Rokk, suspicious of her motives, had Invisible Kid form a squad to spy on her and Live Wire contact some other heroes to form a rescue squad in case they’d need outside help.

His forethought paid off in the end, when the president had the Fatal Five attack the Legion, and the two squads managed to save the Legion and reveal her treachery. However, feeling that the Legion might have outgrown him, Cosmic Boy has resigned his leadership, preferring to have an open vote for the position rather than keep it out of inertia from a time during which the rules and requirements were different. In the vote, he lost the post to Shrinking Violet, who had won it through the machinations of the Emerald Eye of Ekron.

Cosmic Boy was flung back to the twentieth century when the Eye responded to a command to turn back time. While stuck in the twentieth century, he has grown extremely close with Saturn Girl, and in order to protect her from Doctor Psycho, he linked his mind with hers… an act which resulted in his falling into a coma due to an attack of Psycho’s on Saturn Girl.

He seemed to awaken from his coma, during which time he and Saturn Girl announced their engagement to be married, but on their wedding day, it was discovered that Saturn Girl, feeling a need for structure in her life, had unconsciously animated his body and that their entire romance was a creation of her mind, which was more powerful than anyone had previously dreamed.

Following this revelation, the Legion managed to cure him for real, whereupon he graciously took the news that Saturn Girl was actually in love with Live Wire, and he redoubled his efforts to get the team back to the thirtieth century. Following their return, he has ceded leadership of the reunited team to Invisible Kid.


Cos has an athlete’s body, with black hair and blue eyes. His uniform consists of a purple outfit with vertical “rings” around the shoulders, and has the 4 Magno-Discs attached to the chest, side by side.


Cosmic Boy is the epitome of leadership. He manages to keep the Legion on-track, as well as inspire confidence in their darkest hours. Cos is all business most of the time, but especially during a mission.


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Game Stats — DC Heroes RPG Print Friendly

Tell me more about the game stats

Cosmic Boy

Dex: 06 Str: 03 Bod: 05 Motivation: Upholding the Good
Int: 06 Wil: 08 Min: 06 Occupation: Legionnaire/Magno-Ball Player
Inf: 08 Aur: 07 Spi: 07 Resources {or Wealth}: 010
Init: 020 HP: 060

Powers: Detect (Ferrous Metals): 08, Magnetic Control: 16

Skills: Acrobatics (Dodging): 06, Charisma: 06, Detective: 04, Vehicles (Space): 04

Advantages: Leadership, Scholar (Magno Ball)

Connections: LSH (High)

Equipment: Magno Discs (x4) [Body 04, EV 04. Cosmic Boy uses his Magnetic Control as the AV of an attack and the Discs EV. He can throw up to 4 at a time, adding one to his final die roll for every disc thrown after the first]

By Danielle Mendus, adapted from JD’s Write-Up

Source of Character: Legion of Super-Heroes (DCU)

Helper(s): Sébastien Andrivet

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