Evil Dr. Orbot/Knuck Knuck! Who's Here?

Evil Dr. Orbot/Knuck Knuck! Who's Here?

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S2 E106: When Eggman fails a test to get his license for evil, he uses Orbot as his front. Knuckles suffers amnesia. When he discovers that he's the last of his kind, he sets out to find a foster family.