Bowser

Bowser is Bowser from the Super Mario canon. He does not appear in the canon, but appears in a non-canon hidden story called Teleportation Part 1, where he is sucked through a warp to Pop Star, along with Mario and Yoshi and Bowser. Yoshi curses him out loudly for cutting their phone lines back home, and Bowser appears at the end in hiding, watching the other characters before stating his desire to devour them. Strangely enough, in this story he is described as being "even bigger than Dynablaze," which would put him at something over 500ft tall (perhaps he was meant to be Giga Bowser?). The story ends on a To Be Continued right after his singular line, and was never continued or linked from the main site.