MM10 LC2 difference: Chill Man jump x2 pattern
1This pattern (double jump at the beginning of the fight) appears to be exclusive to LC2 specifically in Wily 4 when Chill Man is not the first refight.
This is not known to appear (or at least not yet caught on video) in the original versions or elsewhere in LC2 (Chill Man's stage or first refight). Normally if Chill Man jumps at the beginning of the fight, then his next movement is always to walk.
Theory: Most if not all bosses never perform the same action more than twice in a row. The game has to remember the last two actions somehow. For Chill Man, perhaps this history is initialized with jump as the last movement and that would explain why jump x2 never appears. This history could be shared between boss fights and the original versions reset it consistently after each fight. LC2 modified the refights for its new challenges (bosses don't drop energy). In doing so, maybe the history is no longer reset and carries over from the previous boss. This would allow the jump x2 pattern to appear.
Very subtle.