Donna and the others escape, and are caught in the crossfire when Monarch's forces attack Earth-51. Donna is attacked by an alternate version of herself wearing a Wonder Girl costume, and overcomes her doppelganger and escapes. She takes the doppelganger's costume, defeats one of Monarch's lieutenants, and is acclaimed leader of an insect army by right of conquest. She leads the force of Myrmidons into the battle against Monarch's forces. Superboy-Prime confronts Monarch, and the insect warriors are killed in the fallout. Following the battle, Donna alone is able to discern a message directing the group to Apokolips, where the team are witness to its destruction as they first meet the other Countdown characters: Jimmy Olsen, Forager, Pied Piper, Mary Marvel, Holly Robinson, Harley Quinn, Karate Kid, and Una. Witnessing Apokolips near-destruction at the hands of Brother Eye, the team are later sent to a reconstituted Earth-51 by Solomon, now a world similar to New Earth with the absence of the now much-expanded Challengers team. It is here that Karate Kid dies, and his Morticoccus virus transforms the world almost entirely to violent animal-human hybrids, losing Una to the feral natives and leaving that Earth's Buddy Blank's grandson as the Last Boy on Earth. Returned to New Earth by Jimmy Olsen via a Boom Tube, Gothamites Harley, Holly, and Jason return home while Mary Marvel is once again corrupted by Darkseid who captures Jimmy, who holds the power of all the deceased New Gods. Freed from Darkseid's control by Atom's microscopic rewiring, Jimmy and Darkseid duke it out until Orion descends from the heavens (following his interrupted battle with the killer of the New Gods in Death of the New Gods), and slays his father. In the aftermath of these events, the remaining party of Donna, Kyle, Ray, and Forager announce to the Monitors they will serve as bodyguards for the New Multiverse, and depart to places unknown. Returning to Earth after her adventures in the Multiverse with Kyle, Donna and other former and present Titans are targeted by a mysterious foe who is later revealed to be Trigon. The Titans reform to fend off Trigon's assault and avenge the incapacitated Titans East team. In Final Crisis #5, Donna Troy has been turned into a Justifier. She, among other Justifiers, attacked the Switzerland Checkmate HQ. She tried to put the Justifier helmet onto Alan Scott before being knocked away by