Marrow is a playable character in the fighting video game, M.U.G.E.N Trilogy. She was confirmed along with many other characters who appear in the Marvel vs. Capcom series on April 13, 2015. Susan Hart (MvC2) and Tara Strong (who also voiced X-23, MvC3) provide the role for Marrow in this fighting game.
As a child, Sarah was one of the underground-dwelling Morlocks. When Callisto, the Morlocks's leader, kidnapped the X-Man Angel to be her husband, Sarah came across the captive Angel. Sarah believed Angel was beautiful. He would become an idol of worship for her.
In that harsh dimension, time passed quickly, and when Marrow and several other members of Gene Nation (of which she had become leader) returned to Earth, they discovered only a few years had passed during their absence. Marrow and the other members of Gene Nation began a homicidal terrorist campaign against surface-dwelling humans. After inconclusive battles with the X-Men and Generation X, Gene Nation was defeated by the X-Men. Marrow wired a time bomb to her own heart to force the X-Man Storm, who had herself led the Morlocks in the past, to either yield or kill her; Storm tore out Marrow's heart. However, due to Marrow's possession of two hearts to compensate for her random bone growth and superhuman regenerative abilities, she survived.
Marrow has since come to associate with the terrorist X-Cell, confronting Siryn and M before they could assault Blob and Fatale. She still sported several bone growths on her forehead, but depowered in the aftermath of the M-Day, she's forced to use throwing knives as weapons. At some point afterwards, she underwent a procedure to have her powers restored, but being pregnant at the time, she suffered a miscarriage. She later joined the X-Force under Cable's leadership.
How to Unlock
Scan Marrow's AR Icon from the M.U.G.E.N Trilogy website.