The Super Mario Bros. Super Show!

Princess, I Shrunk the Mario Brothers (1x43)

Air date: Nov 15, 1989

Waldo the wizard befriends Mario and Co and intends on using a shrinking potion to shrink Koopa. Unfortunately, Toad spills the potion on the Marios, which undoubtedly shrinks them. Now the Marios have to elude the Koopas, while Waldo tries to conjure up an antidote.