Vega
His standing LK is safer than his standing close LP, the standing close wont whiff against crouching, if they block a standing close LK, quickly throw them. His standing far away MP, HP and crouching MP are his best ideal pokes. Use crouching HK to get in close quickly after a successful Rolling Crystal Flash (charge b, press f + P) a crouching Lp, Rolling Crystal Flash (MP) is a great two-in-one but itmight glitch and not hit. On some characters u can crouching LP, Rolling Crystal Flash (HP), if u score a Two-In-One finish off with a crouching MP.
Vega has great anti-airs from, standing HK, crouching HP and Scarlet Terror (charge db, press f + K). There's a great combo with this move but its rather difficult to pull off. Crouching MK, Scarlet Terror (HK), Scarlet Terror (MK), four hits baby.
His Off-The Wall moves are good for mix-up's and can annoy a slow paced character. These moves come in hadny to punish a whiffed move that has slow recovery, in this case use a Izuna Drop (Charge d, press u/ub/uf + K, when close press f +P) Mix this up with Flying Barcelona Claw (Charge d, press u/ub/uf + K, then press P) Sky High Claw has great priority and can go over some attacks crossin' up the enemy but leavin' u rather open. Vegas has a unique combo with this move. When ya in the corner, your opponent close to you, crouching MP, Sky High Claw (HP)
Never pick Super Vega. All ST characters have quicker walk speeds. He'll tech throw as well. Super Vega doesnt have the Scarlet Terror and his Sky High Claw isnt as good, plus if ya lose ya claw then ya fucked.
A crouching Hk is good to set-up Rolling Crystal Flash patterns, throws and Wall Leap wake-up's.
Combos
Crouching LP, Rolling Crystal Flash (MP/HP), crouching MP
Crouching MK x 2, crouching MP
Jumping deep HP, crouching LP, MP
Jumping deep HP, crouching MP, MK
Jumping deep HP, standing close HP, crouching MP
Crouching MK, Scarlet Terror (HK), Scarlet Terror (MK)
When you are in the corner and the opponent is standing close, crouching MP, Sky High Claw (HP)
Jumping deep HK, crouching HK