This article is about the form, for it's true form see The Monster (character).
Pepsi is Mario's, SMG4's, Luigi's, and Toad's baby and is the main antagonist in one of SMG4's bloopers: The babysitters. He was brought to the Mushroom Kingdom inside a box, however, is evil. He turned into his true form afterwards when trying to get Bowser's army but he was killed by Luigi with just a single punch, he then burns up and dies. The baby resembles Baby Mario.
- At 11:37 in the video, if you look closely, his text box name was changed to Mario, although it was supossed to be "baby".