The Grim Adventures Of Billy And Mandy
Concept art:
Hold 1 and press Up two times, Down two times, Left, Right,
Left, Right at the main menu.
Play as Boogey:
Successfully complete Mission 9 in Tier 4 in Mission mode.
Play as Chicken:
Successfully complete Story mode as all characters and accumulate
10 hours of game play.
Play as Dracula:
Successfully complete Mission 5 in Tier 3 in Mission mode.
Play as Eris:
Successfully complete Story mode as Billy, Mandy, Grim, or Irwin.
Play as Fred Fredburger:
Successfully complete Story mode as Billy, Mandy, Grim, or Irwin
Play as General Skarr:
Successfully complete Mission 6 in Tier 4 in Mission mode.
Play as Hoss Delgado:
Successfully complete Mission 9 in Tier 1 in Mission mode.
Play as Jack O’Lantern:
Successfully complete Mission 9 in Tier 2 in Mission mode.
Play as Lord Pain:
Successfully complete Mission 9 in Tier 5 in Mission mode.
Play as Nergal Jr.:
Successfully complete Mission 9 in Tier 3 in Mission mode.
Play as Nergal:
Successfully complete Story mode as Billy, Mandy, Grim, or Irwin.
Play as Nerglings: -
Successfully complete Story mode as all characters.
Alternate costumes:
Successfully complete Story mode with any character to unlock an
alternate costume for that person. When you complete Story mode with
a character that has a costume and you destroy the credits, Mandy
will be in a costume.