Isn't Pride the one who can change at will? The young kid who pretended to the Gran in the prison?

That's Envy. EnvyxEd OTP! *koff* (I think I've got that in my head more from the manga. *g*)

The mad bomber was one of the National Alchemist who, yes, also appeared at the Lab 5 arc

Right, I'm just re-watching those eps now.

This show is so complex. I really love that, but it's hard to keep things straight!