X-Men vs. Street Fighter - PlayStation 1
From: "Jeanette Hill"
Kick Him While He's Down:
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After winning a round, press START and you'll be able to kick or
taunt your defeated opponent.
Play as Akuma/Gouki:
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Highlight either Magneto, Juggernaut, Dhalsim or Vega and press UP.
You will see the face of Akuma. Press any button to use it.
Play as Apocalypse:
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At the Versus Mode character select screen, hold SELECT on Gouki
for five seconds, then press any punch button.
Kick Him While He's Down:
-------------------------
After winning a round, press START and you'll be able to kick or
taunt your defeated opponent.
Play as Akuma/Gouki:
--------------------
Highlight either Magneto, Juggernaut, Dhalsim or Vega and press UP.
You will see the face of Akuma. Press any button to use it.
Play as Apocalypse:
-------------------
At the Versus Mode character select screen, hold SELECT on Gouki
for five seconds, then press any punch button.