Ninja Turtles: The Next Mutation

The Guest (1x21)

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(Synopsis credited to Ninja Turtles.com) When Splinter's chess opponent is thrown out of his apartment, he moves in with the Turtles for a few days. It's bad enough that the reptilian roommates have to conceal their identities from the old blind man, but it's even harder putting up with the old fellow's idiosyncrasies!