Ok, so does his blocking of HSS affect only the opponent or your team as well? I'm sure this is a stupid question but figured i'd ask before building my team for my next tourney since I just pulled him.

your team as well. theoretically he would be the only one using hypersonic speed
but if your opponent uses him as well then your both stuck with no hypersonic.
i think and hope somebody will confirm this since im not real great at explaining the powers.

That is the way it looks to me.

Confirmed.