BBBBBB+Grab BG (pokepokepokepoke, grab buttpoke + knockback, usually a ringout) That's the quickest way to take off 50% HP with Raphael since he's so quick without being Taki-speed hack. Or do that foot stab.
EDIT: Ohwait, I think its B+G for the thrust grab. Usually, the back grab works best when the opponent is stunned and it looks like LOL.
Siegfried however, can just get away with forward+B, then B+B (down attack), then stomp repeatedly.
Launch with back+B (not advised when the opponent is down since its a quick way to set them back up), then dash+launch, repeat until dead, or 8 way with left slash x2 + forward stab as finisher (not sure). Usually, the AA+B is good, but if you can pull of the AA+B hold, then better.
The Jerry Forward Run:
Forward+B,B+B,down+AAAAA (or crouch rising stab). 8-way runners usually beats this easily, but when timed right, this is almost a 1-shot combo. I don't recommend Siegfried's heavy specials since he's damn slow and casting that on the wrong times makes him easy prey for faster characters.
Sometimes, battles are forced to the edges. When it happens, ->,->,B+K Drop Kick. Misuse it and you'll end up getting ring out on yourself.
