This page explains in detail the interactions between the Mario series and the SpongeBob series.
The SpongeBob SquarePants Movie[]
November 14, 2004
Floyd and Lloyd look very similar to Mario and Luigi from the Mario series because of their colored caps, long pants and similar heights as Mario and Luigi.
SpongeBob SquarePants episode Atlantis SquarePantis[]
November 12, 2007
In the part when Sandy Cheeks is in a video game, she goes down a Warp Pipe and into a room that has the same frame and background as the used during game play of Dr. Mario. Also, she kills bacteria by stomping them. When she does so, the Jump sound is used.
SpongeBob SquigglePants[]
April 12, 2011
This WarioWare-like game features spoofs of many NES games in a single "Nanogame", and one of these is Super Mario Bros.
SpongeBob SquarePants episode Extreme Spots[]
July 21, 2012
The Mattress that beats up Johnny Krill looks and acts similarly to the Whomp enemies from the Super Mario Bros. video games.
License[]
The creators of the SpongeBob series held no right over Nintendo's Mario, but they only included minor references to the series.