To infiltrate the Injustice Syndicate of a parallel Earth, Batman takes the place of his villainous counterpart Owlman (whom Batman defeated and imprisoned in the Batcave's cell). He infiltrates the Injustice Syndicate and gains the unlikely alliance of Red Hood and heroic counterparts of the villains Batman has faced.
Unnamed Syndicate members: Plastic Man (black-and-red costume), Aquaman (green skin, blue tunic), Fire (orange costume and yellow hair), Wildcat (seen in flashback, white costume), Bwana Beast (seen in flashback)
Assembled "heroes": Gorilla Grodd (white furred), Gentleman Ghost (black clothing), Sinestro (yellow costume and power ring), Dr. Polaris (scarlet armor), Black Manta (orange tunic), Brain, Clock King and Kiteman (seen in flashback)
Villains seen on Batcave screen (l to r, top to bottom): Gentleman Ghost, Kiteman, Black Manta, Gorilla Grodd, Clock King, Brain