f+A is an overhead attack. Slow.

+P will come out even if Mr. Big gets hit during this move. Also, safe if blocked. A version has little range.

+P: A version has autoguard. C version for combos.

+P: Forward flying spin move thingy. Need to calculate distance before executing due to recovery.

+K: Mr. Big spins. Reflects projectiles (wtf), can't hit crouching opponents. Obviously, not NGBC version.
P,P,P: Random stick bashing, pushes opponent away even if it hits, avoid at all costs.

,f+P: Grab move. Comes out decently fast.
qcfx2+P: Mr. Big's Raikoken, no invincibility but can link from weak attacks.
hcbx2+P: Grab super. Nothing too special about it here.