Sabrina: The Animated Series (1999)

S1E34 The Hex Files

Sabrina's class embarks on a trip to a science observatory, where she meets up with her struggling Uncle Quigley, who is facing challenges in his scientific career. In an effort to uplift his spirits, Sabrina and Salem conjure up some aliens for him to "discover." However, they accidentally use characters from Harvey's video game. When the observatory learns the truth, Quigley is dismissed until genuine extraterrestrials appear. Together, Quigley, Harvey, Sabrina, and Salem help the aliens return home, leading to Quigley's newfound acclaim as a distinguished scientist.