Various mad scientist concepts.

Homer Simpson.

Queen Plum and Armaouser

🔃

Human Tails and Knuckles, to finish off the Sonic Heroes.

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Kirby and his various enemies. (At least I THINK Dedede and Meta Knight are Kirbys enemies.)

My good friend @GordontheeGoober made this character Filburt. Don't worry. Gordon gave me permission to share it, despite it being in a private chat room.

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SONIC CD 2