In H, you can do his air strings off of his 214 A, 214 B, and 214 C. This is important. The EX version is really good too. Off of counterhit, I'm pretty sure you can combo into his Arc Drive.
His tackle, 236 A (B or C) is safe on block if spaced correctly. The EX version is basically Ciel's EX Hero.
623 A (B or C) is some kind of diagonal headbutt. Pretty good anti air. This probably works better in the air since it beats out alot of air to airs. EX is worthless.
C Roa isn't bad at all. You give up really good block strings for a better keep away game. The orbs are air unblockable and you can set up some intricate traps. He's good, but takes alot of work.