Marvel first rejected Juggernaut's jumping animation for Capcom's 1990s Marvel fighting games, telling developers, "Juggernaut can't jump. He's too heavy," according to former Capcom localization lead Takuya "Tom" Shiraiwa. [1]
Shiraiwa said Capcom pushed back because the character needed to cross gaps and reach aerial combos in a fighting game that used vertical space. He recalled asking what Juggernaut would do in front of a big hole, and said Marvel replied that he would fall in and keep running when he landed. [1]
The dispute came after Marvel and Capcom began working together with The Punisher arcade game in 1993 and then moved into fighting games with X-Men: Children of the Atom in 1994. Marvel's character rules in the 1990s were strict, and Capcom said that made development difficult. [1]
Marvel ultimately let Juggernaut jump in X-Men: Children of the Atom and Marvel Super Heroes. That decision let Capcom use the character in matches that depended on movement through the air as well as on the ground. [1]
Juggernaut is one of the X-Men's biggest villains, a tank-sized figure powered by a demonic gem, and the comics never explicitly said he could not jump. [1]
