I think the characters on the computer screen are
Frankenstein, ?, Damage, Deadman or Metamorpho, Aztek, ?
Etrigan, Rampage?, Blue Devil, Booster Gold, Power Girl, ?
Alpha Centurion, Amethyst, Atom, Black Lightning, ?, Ray
Batwoman, Ambush Bug, Azrael, Black Orchid, Clayface, ?
Animal Man, ?, ?, ?, ?, ?