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Tear Jerker: Paw Paw Bears
In the episode Greedy Greenies, we are introduced to a Slave Mook Paw Paw turned into a greedy greenie. Even as a greenie, he's a complete and total woobie.
A small one but in the episode "Honey Of A Robbery", Trembly Paw asks Mighty Paw a hypothetical question about himself if no one believes him when strange things happen. The pathetic whimper in Trembly's voice is enough to make him The Woobie.