User blog comment:Aandrew07/Discussion of the Week: Rage Mode/@comment-24277910-20131215172938/@comment-6050823-20131215174138

In MH4, they do have a Rage Mode along with a Pin Attack and can even jump up walls to knock hunters down. For some unknown reason, they can climb/jump up walls while the prey can't.

I think Giadrome had a Rage Mode in MHF2 but its Rage Mode was taken out of MHFU. Back in that game, it had icy breath coming out of his mouth occasionally(Not the icy spit).