Tekken 5 - Superdragonalienevilfinalbossweirdo
Yea I dont remember his name, Jinpachi or something strange and unrememberable. But he could do this stomach-mouth blast which takes out around 3/4 of your health, and he'd do it more than once, and it was near impossible to dodge since it was so fast and you were usually in the middle of a move when he unleashed it. I avoided it by making sure I knocked him down first move and never let him get back on his feet, but this took ages to practise since you have to beat him with each character at least twice, and some of the characters are simply out-matched and you have to hope he just never uses that move.
lol
Yeah, that was a pretty annoying but the best way to dodge it is to simply press Up, or down 2 times.