If you kill the opponent in the training room the game will freeze and character's victory animation will play but it'll just stay on that screen.
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Ok thanks.
I don't know if it's intentional, but after doing a launcher or launcher into L > M > H in the air, the opponent will be in a juggle state where you can just fireball over and over, and it won't push you back so you can infinitely juggle your opponent (Even leaves you kinda safe if they try to burst out since fireball is pretty low endlag)