The boss in the titular Global Frequency network, which does super-competent global crisis response in a slightly fictionalised world.

Batgirl (Barbara Gordon) during her earliest, Silver Age, 1967/68 appearances.

A scary, weird expert in a comic book version of biofeedback. Superhuman violence monster, but he’s on the Frequency so he’s okay.

Stephanie Brown in 2008-2009, between her Robin era and her Batgirl era. Part of a large series, so definitely check Batgirl orientation page first.

Stephanie Brown during the brief era when she was Batman’s Robin. Please check our Batgirl orientation page first, though.

The heroine of notable 1990s indie comic Wandering Star, a sci-fi/war/coming of age story.

This is the version of Bat-Girl (Betty Kane) who appeared in 1961, with the girly gadgets.

Obscure one-shot 1961 Batman and Bat-girl enemy.

A mediocre, minor DC Comics villain. But there were more versions of him than you can shake a lamp at.