Wolverine

James "Logan" Howlett, AKA Wolverine, is a superhero from Marvel Comics. He appeared in the 23rd episode of DBX, Raphael VS Wolverine, where he fought against Raphael from the Teenage Mutant Ninja Turtles franchise. He later reappeared in the 62nd episode of DBX, Wolverine VS 100 Barakas, where he fought against Baraka (albiet, with 99 other Tarkatans) from the Mortal Kombat franchise.

Backstory
Born in the 1800's, Wolverine's 100+ year life has been filled with love, misery, and death. Having been experimented on by the Weapon X program, which coated his bones in adamantium and nearly erased all of his memories, Wolverine has spent years trying to piece it all together.

After fighting The Hulk, Wolverine decided to join the X-Men, where he battled for the dream that humans and mutants could co-exist in peace. Wolverine has also been a member of the Avengers as well.

Trivia

 * Wolverine is the third Marvel character in DBX, after Spider-Man and Iron Man, with the following 12 being Iron Fist, Magneto, Gambit, Taskmaster, Thor, The Hulk, The Juggernaut, Blade, Mr. Fantastic, Daredevil, Domino, Iceman and Black Cat.
 * He is the first Marvel character to win, with the following five being Taskmaster, Thor, The Hulk, Iceman and Black Cat.
 * He is the first X-Men character into DBX, with the following four being Magneto, Gambit, Iceman and The Juggernaut.
 * He is the sixth combatant to return, after Sasuke Uchila, Master Chief, Killua Zoldyck, Amy Rose and Sakura Haruno, with the next four being Alucard, Ryu, Liu Kang, and Mega Man.
 * He is the third to win both times, the first two being Sakura Haruno and Killua Zoldyck with the next two being Ryu and Mega Man.