"The Ghosts of Mars" Parts 3 and 4 of 5. The original Justice League learns how to accept the Martian Manhunter as one of their own, but the most alien of the League comes with some baggage — in the form of his brother's ghost!
J'onn J'onzz is on Mars, meditating on the fate of the Red Planet and holding a conversation with his brother, Ma'alefa'ak. Though Malefic is dead, during their youth, J'onn and Ma'alefa'ak shared in the Martian rite of G'amal'khul, the exchange of self between loved ones. Centuries later, this aspect of self left behind in J'onn's psyche still persists. In Malefic created illusions he fights with Aquaman and eventually the entire JLA. In the course of the battle he finds the missing aspects of his wife and daughter, who beseech him to stop Malefic.