Stone plated creatures

The  is a enemy in Frost Bite 1 and 2. They have no arms. Their rock plated bodies cannot be injured by the Grappling Hook. Instead, they have to be jumped on. When the are first jumped on, they will stop, and their stone plated body will crack a bit. The next time it is jumped on, it will die.

Trivia

 * A possible reason the didn't appear in Thin Ice, is probably because it didn't walk fast enough, or Nitrome wanted to include some original enemies in the game.