Jack

"But it isn't as bad as Jack. He's been so afraid of everything now, ever since we first saw him, and now he looks like he's going to get mentally insane."- Glow, talking about Jack.

Jack is a contestant on Twisted Turns,

Personality
Jack is scared of almost everything, constantly cowering in fear. Tardis describes him as childish.

Appearance
Jack is a card with two J's.

Trivia

 * Jack can be compared to Woody from BFDI.