The Grunk archers, who shoot very quickly, accurately, and deal a surprisingly high amount of damage.
The catbirds fly insanely fast due to glitching.
Enjoy the Story, Skip the Game: The game is regarded, gameplay-wise, as an underwhelming RPG with shaky controls, poor animation, lots of Hitbox Dissonance, and a significant amount of bugs. The story, however, is the game's highlight, as it's basically the writers' giving a giant middle finger to the executives that told them to make a game about Skittles.