Anybody you like, he’s a pretty powerful green 4* hero !!!
Exactly, @Ray008. Buddy’s primary role is dropping the defense and attack of three foes; as a secondary bonus he does some damage to them; tertiary benefit is some minions.
Therefore I’d pair Buddy with some strong hitters–take your pick, heroes like Bane, Balthazar, Caedmon, Jackal, Scarlett would all work great.
The only thing to note is that you shouldn’t put Buddy on the wings; he should be in one of the central three spots so that there are more minions.
Thank you both…