1. He cannot control the crowd 2. He's pretty slow which makes his combos useless because he needs precious time to execute them 3. His combos almost never hit multiple people at once like a lot of other characters 4. His wave dash is almost useless except against Radec's sniper, his wave dash only renders him invulnerable during the start up animation. 5. His supers are TERRIBLE, level 1 is almost always 1 kill (which I guess it should be but it's really unfair to other supers such as Drake, Raiden, Sly etc.) his level 2 is the best but still really sucks because Kuma's AI is really stupid and his level 3 is just 3 instant kills which is not worth it at all.
He's by far the lowest tier imo because he was built for 1v1 which makes sense but not for this game. Such a shame.