Sephiroth

Sephiroth is the main antagonist of Season 5. He is a victim of Mr. Man's attacks and seeks for revenge. Despite being an evil manipulator, he did not originally have evil intentions.

Five years before the events of Season 5, Sephiroth was an ordinary man. His father was known for his time machines and Sephiroth hoped to help his father out with his job once he got older. After Mr. Man killed his family, Sephiroth looked into his late father's inventions and went out for revenge using his newfound time abilities. After learning that Gema Asougi was the reincarnation of Mr. Man, he manipulated many people throughout space and time for vengeance. Sephiroth eventually learned that the protagonists were affiliated with Gema by pretending to be a bartender on a plane ride. Sephiroth then sent Justin Case back in time to murder one of their close allies, Deltarune Lancer.

Using the research of Sherlock Holmes and Watson the protagonists traveled to the future, ending up at a post apocalyptic London. It was revealed that this was this would be the world if Sephiroth would win. Sephiroth believed that it was finally time to confront the protagonists and explained the situation to them. He persuaded the protagonists into thinking that they were no different than him, seeking justice for loved ones. Sephiroth realized it was time for the gang to empathize with him, and ended up altering the realities of Ryunosuke Naruhodo and Phoenix Wright. This reality was a darker twist onto what normally would have been, having all of the two's loved ones be eternally erased. He eventually announced his plan to erase the world in 3 days for his so called "justice".