Hello Kitty

Hello Kitty (or Kitty for short) is a white fictive kitty, and the mascot of the japanese society Sanrio. In SuperMarioGlitchy4's videos, she's a very minor character who never appeared really physically.

Super Hello Kitty Rollercoaster Tea Party 2
This episode, which revolves around the video game Super Hello Kitty Rollercoaster Tea Party 2, is Hello Kitty's first appearance in SMG4's bloopers, but she only appears with her friends on the box of the game when it's shown in an advertissment on the television while Mario is watching it (the red plumber then wants to buy the game).

Christmas 2013: The 12 Idiots of Christmas
At two moments of this video, which is in fact a song, a picture with a white kitty with spaghetti on her head is seen. That cat may or may not be Hello Kitty.

Ssenmodnar 9 - Time Travel Edition
In this other blooper, a Hello Kitty head doll appears in the third skit, in which SMG4, while he was telling SuperMarioGlitchy3 off, saked him what was a Hello Kitty, and then pulled his troll face next to the doll.