The Adventures of Superboy (1988)

Super Menace! (2x13)

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While running tests on kyptonite at a military facility to neutralize its effects on Superboy, they find that the alteration has emotional effects, making him apathetic. The military enlists the help of Metallo to give the Boy of Steel an attitude adjustment. After almost killing him, Superboy and Metallo join forces, posing a disastrous threat to the town.