Star Gladiator (PS Version) Secrets Questions

I own Star Gladiators for the Playstation 1, and I own the official strategy guide. The guide seems to leave some stuff out though.

For example, how do you get Blood to challenge you? I’m assuming that you have to end a lot of rounds with Plasma Strikes (Supers).

Is there any way to unlock Bilstein, Kappah, or Blood w out using codes? I’d rather earn them…

Can anybody direct me to an online move list? I think I’ve found an unlisted move for June (tap back, tap forward + horizontal), don’t know how to do Gerelt’s taunt (the manual just says press K), the manual doesn’t says which moves in a plasma string are “true” combos, etc.