Show characters, everybody. Especially Silverbolt and Quickstrike.
Non show characters, the Fuzors, especially Bantor, Terragator and Buzzclaw.
Also Prowl Owl and Jawbreaker/Cackle. They were amazing. Cackle could do with a better robot mode tho.
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Can we just have organic beast modes that need to be done?
A (decent, non combining) lion, a kitty, a puppy, an actual tiny bumblebee, an armadillo that can roll into a ball (Armordillo/Bump doesn't), a deadly koala, a trash panda, a chipmunk,
Mythics or Fuzors 2. Unicorn (yes, but Battle Unicorn is in Beast Machines), manticore, a griffin.