Archie's Weird Mysteries - Season 1 - Eps 4: Invisible Archie
Archie and Reggie are unhappy with Betty and Veronica's new muscle-bound interest, who just so happens to have recently edged Reggie off of the track team. So Reggie suggests that they use Dilton's new physique inhancing formula on themselves, which thus far has been proven to work on lizards. Dispite Archie's disapproval, both he and Reggie end up doused in the formula -- but instead of the desired result, they both turn invisible! While Dilton tries to correct the situation so that the boys don't vanish for good, Archie must track down Reggie, who is gleefully attempting to use his new-found invisibility to exact revenge on the girls' new crush.
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)