You're not, really. I pronounce it "fur-deh-gah," but it really is a sort of shortening of:
Friedreich's Ataxia (FrdA)
and the codon that codes for it (gaa).
Frdagaa. Now, as to why I chose that.... My dad's one of the top two or three experts on this disorder in the US, so he started using it, and the rest of the family is too unoriginal to come up with anything better. At least we know that no one else will have ever taken it.
Edit: O, and I guess I can try contribute to the actual question. First: when you say he's aggressive, how so? How does he approach, what moves have you seen him use, stuff like that.
Edit 2: Also, if anyone's the type that wants a more specific answer (I explained the genetic coding slightly inaccurately because it's easier for the layman to understand), the wiki page is actually a pretty good one.