Captain Planet and the Planeteers (1990)

Season 2: Episode 14

Gi and Linka are livid when Wheeler belittles their favorite rock singer, but it looks as though Wheeler may be right after they come upon a land-ravaging, strip-mining operation run by Hoggish Greedly, but bankrolled by none other than their idol - Sky Runner! Stunned, they confront the star, who turns out to be innocent, but they still have to stop Greedly before the small mining town is destroyed.