Hit em with an ex fireball… he’ll turn red.
You can’t follow up the fierce + roundhouse chain with anything to combo. The chain kinda sucks and is best used on characters like hugo, and possibly only hugo because you can hit him while he’s crouching, and you know how much people like to crouch in fighting games.
Any way you slice it, you have to stand to connect the ex side kick. Except, I guess, with a crouching fierce, but that requires you to move the joystick back before the half-circle, so you might as well just stand up and do a standing forward or fierce instead.
The red parry occurs during what would normally be a combo. You can break the block stun only by attempting a red parry (or letting go of the joystick, of course, since they took auto blocking out of sf3). While normal parries are fairly easy to time, the red parry is much less forgiving. While blocking, move the joystick to neutral before tapping it forward, but really fast. An example would be blocking ken’s super three, and red parrying the last hit. Best way I can describe it is parrying almost at the exact instant the hit would come.