In the series premiere episode, in "Mark's Magic Pictures" segment, Mark Moth...
Yo Gabba Gabba!
Season 1 Episode 13: Halloween
We learn all about how seasons change. Shiny Toy Guns (aka "The Shinys") Biz Markie (Biz's Beat of the Day) DJ Sifa "It's Halloween" Animation by Kluncklick Music performed by I Monster Super Martian Robot Girl "Be Good Big Kitty"