Archie's Weird Mysteries - Season 1 - Eps 21: Reggie or Not
Two aliens come to earth looking for somebody with a head full of knowledge, to drain for their own uses in taking over the planet. Enter the unsuspecting Reggie, who winds up trapped on their ship. The aliens, convinced that Reggie's friends might start to worry about him, decide to make a clone and send it back in his place. The only problem? The clone is nice...really nice. Archie isn't fooled by the imitation Reggie for a minute, but the rest of the gang are pleased with his ""change of heart""...until they discover the truth.
About Archie's Weird Mysteries

Title: Archie's Weird Mysteries
First Air Date: 1999-10-02
Last Air Date: 2000-02-21
Status: Ended
Rating: 6.1/10 (from 16 votes)
Language: EN
Seasons: 1
Total Episodes: 40
Network: Pax TV M6
Genres: Animation, Comedy, Family, Mystery, Sci-Fi & Fantasy, Kids
Production Companies: DiC Entertainment, Les Studios Tex SARL, M6, Riverdale Productions
Synopsis
Things are getting weird in Riverdale, home of all-American boy and high school newspaper reporter, Archie Andrews. Ever since an experiment in the high school physics lab went awry, Riverdale has become a magnet for the stuff of which “B-Movies” are made.
Cast

Andrew Rannells
Archie Andrews (voice)

America Young
Betty Cooper (voice)

Camille Schmidt
Veronica Lodge (voice)

Chris Lundquist
Jughead Jones (voice)

Paul Sosso
Reggie Mantle (voice)

Ben Beck
Dilton Doiley (voice)