Scyl, Ninja, Kael (in livesteal gear), Banshee, and maybe Monster

Skullcrusher is great for CB. Team counter attack, protection, unkillable to tank the damage and can purge the stun on himself. Also very cheap to book, just 1 required if you're lucky or 5 if you're not.

That's definetly not the best CB team. He has Skullcrusher (counterattack) and Maneater (unkillable), they should join the team.

so maybe  scyl, ninja, skullcrusher, maneater and bashee?

I  have  these  in  my  vault    

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Do u have painkeeper?

Nope

Skadi has some good advice up there for a team comp.

But... I see you have Hotatsu fully leveled. If he's masteried, I'd give him a shot in CB. He's got a nice defensive aura, a leech, a decrease attack, an increase defense and continuous heal. He also self-cleanses the CB stuns. I might be playing around with something like:

Hotatsu, your lead, does all kinds of CB goodness, see above.

Ninja, has HP burn, decrease defense, extra boss damage, hits hard.

Skullcrusher, ally protect, counterattack, shields, can also cleanse stuns.

Frozen Banshee, poisons, poison sensitivity

Last slot, utility, I'd want to try out Uugo for her leech and heals. This would enable you to not have to worry about lifesteal gear cause you'll have leech up almost every single turn. If not Uugo, give miscreated monster a try and you could have him pop his shields when Skullcrusher's go down!