Rock Trolls are a legendary species of Troll that specialise in trolling people by erasing memories. For some reason, MatPat‘s memories can’t be erased by them, and is the only one who knows they are evil & of the existence of Bippo.

Times they have screwed with memories

  • Erasing all memories of their own evil deeds.
  • Erasing all memories of Bippo the dog and the Flicher brother.
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