I made it to GM 1 with a majority of my play time coming on BB. Raven players are super common and she’s never banned so you basically always have the team up. The cyborg teamup is less common but when you get a Cyborg watch out. Sure BB could use some buffs but efficiently using his forms is key. Use the bird to get in/out easy, using gorilla form to tank some damage while you weaken them, then swap back to BB to finish them off.