Paying homage to my most favorite group of Transformers, the Fuzors!
Bantor - He was all mandrill before Ratchet put a tiger in his tank!
Slight mod: the helmet is Bludgeon/Vehicons' with the 'chinstrap' snipped off.
I seriously hope the beast-head can actually be held by/attached to the hand somehow.
Buzzclaw - Colors EVERYWHERE
Like Waspinator, "bald" is better than any of the available helmets.
I'm not sure how well it reads, but the mantis head is made up of Spinister/Scorponok's chest piece (the eyes) with a ramp-type block on top (the red/orange part), while the mandibles are merely painted on the chest.
Kreons really need more beast parts...