Donna Troy

Note: This article is about the version of Donna Troy seen in New 52 Wonder Woman (later retconned by DC Rebirth), the alternate future Troia version seen in DC Rebirth's Titans, and the character while infected by The Batman Who Laughs in The Year of the Villain. Her usual, heroic self couldn't be any more different.

Donna Troy is a character in DC Comics. Usually a hero, in various arcs she has been portrayed as a villain. The New 52 relaunch initially introduced her as a creation of the evil sorceress Derionie, made to defeat and supplant Wonder Woman. This version of Donna subsequently reforms, though is retconned by a more faitful, heroic version of the character in Titant Hunt and DC Rebirth.

An alternate future version of Donna, going by Troia, is introduced in DC Rebirth Titans. Seeking to eliminate her friends to eliminate any sense of less she's felt, this counterpart is defeated by the true, present-day prime Donna Troy.

Donna Troy is later infected by The Batman Who Laughs, turning into a twisted Dark Multiverse version of herself - Deathbringer.

New 52
Donna Troy is created as a weapon by the sorceress Derionie out of rage and hatred in order to usurp Wonder Woman as Queen of Themyscira. Aamed as such by the Amazonians' Council, she seeks to kill the Sons of Themyscira, but is opposed by Wonder Woman and her forces, in battle. She is defeated in combat by Wonder Woman, who uses her lasso of truth to show remove Derionie's influence on Donna. Initially imprisoned, Donna is later freed. She goes on a soul-searching journey of redemption, in the process befriending a woman named Violet - only for her to be killed by a thug. A grieving Donna, comforted by Diana, is then killed by Aegeus. However, she is then resurrected by Zeus as the Fate of the Gods.

Troia
A future, 1400 year-old version of the real Donna Troy (separate from the New 52 version, though with some backstory similarities regarding Derionie), named Troia, time travels to the past to confront her former teammates, The Titans. She had communicated with Psimon, Mr Twister and The Key, powering them up and giving them instructions to open a gateway. Driven insane by the losses she incurs during this lengthy lifespan (the deaths and struggles of all the Titans, her only friends), Troia seeks to kill the Titans in order to save her this pain, by never having anything to lose. Revealing her history to the present-day Donna Troy, she beckons her to join her. However, Donna rejects Troia and defeats her, sending this alternate version back to her timeline.

Deathbringer
Donna Troy is infected by one of The Batman Who Laughs' dark matter batarangs. Transformed into a twisted, dark version herself that lets go of her morals, she battles against initially Batman and Superman, to free her master, and later Lex Luthor.