structural:scholar_edition, structural:expansion, linguistic:translation
Tap Tap the Chiseler

In "From Hopeless to Helpless", after Riff Raff stole the Hopeless Diamond, Tap Tap was hired to help cut it into little pieces so that Riff Raff could sell it and impersonate Underdog in order to commit crimes all over town. Everyone, including Sweet Polly (this is the only episode in the series where even she begin to doubt about Underdog, due to her being fooled by Tap Tap and mistaking him for Underdog after he snatched her purse), thought Underdog had turned to crime and he was sent to jail, much to Underdog's shock. Tap Tap pulled off the crimes so excellently that even Underdog (thanks to Sweet Polly's biased lecturing) was convinced he was guilty, believing that he had sleepwalked when the crimes were committed. However, Riff Raff needed Underdog to break the Hopeless Diamond into a million pieces after Tap Tap had failed to cut it, so they broke Underdog out of jail and told Underdog that Tap Tap had imitated him and framed him for the crimes all over town. Now knowing that Tap Tap had been responsible for the crimes that were supposedly committed by him, Underdog pretended to really turn to crime in order to fool the gang. When he finally retrieved the Hopeless Diamond from Riff Raff, Mooch and Tap Tap, he apprehended them and explained to the townspeople, including Sweet Polly, how Tap Tap had imitated him and framed him for the crimes. The townspeople, including Sweet Polly apologized to Underdog for the misunderstanding and falsely accusing him, and prior to the episode "Tricky Trap by Tap Tap", Tap Tap was sent to prison.