The Real Ghostbusters (1986)
S03E10 The Grundel
Episode Overview
Lee seeks out the Ghostbusters when his brother Alec starts exhibiting odd behavior and engaging in mischief. Concerned for his sibling, the team agrees to look into the matter. During their investigation, Egon discovers that a Grundel is influencing Alec’s actions, and if they don’t intervene quickly, Alec risks transforming into one himself.