I'm really loving exploring Midvalley's softer side with Jazz and some of the Asgard residents, but he hasn't used Sylvia to hurt anyone since he got here, and, well, he is in Niflheim.
The problem is, he's also been pretty mellow since he got here and didn't have to deal with his "bosses" from canon, so probably whoever it is would have to start up with him. Maybe if they seemed like a real threat to him or Jazz... Or just got in his face in a really bad way. If he thought someone was seriously insulting his mother it might get to him though he might try to laugh it off at first.
It definitely doesn't have to be an Asgard person. I'd rather it not be someone he's been more-or-less friendly with, such as Mitch, Sal, Dorian, or Morana (and besides I can't see the latter two picking a fight with him.) I'd also like it to be something that wouldn't get Jazz seriously ticked off at him, as his robot companion is pretty important to him, so maybe Jazz's player can advise me on that.
I don't need for him to seriously hurt someone and they can "win" the fight if you want, as long as you don't mind them having some brief serious pain from the saxophone.
Wow, I cannot keep anything short.