Who here played Little Fighter 2? Remember a guy that could only be made if you and another player played firen and freezen? If you were at critical hp and ran into each other, someone got to play as Firzen. This concept could be cool to have two heroes that fuse into one maybe briefly for their ultimate ability.
A fire guy and an Ice guy. Or infernus and Kelvin special interaction if on the same team and both consent, one person takes over them for like 15 seconds for some big damage output burst guy.
Ill go more into it if anyone finds it even the least bit interesting
