3 enemies that are needed in the game.
The bats. The bats are a type of sound based creature that can disorient the player character by screaming your direction. But if 2-3 bats are in the same area one of two things can play out the bats will integrate with each other or set a trap for the player character. Maybe the bats could do more but I need more ideas for them.
Securibots. Three security robots with different colors and looks found later in the story and have to make get through three robots hidden in that area by either trapping them or destroying them.
Doppelgangers. The doppelgangers are found in the festivals maze of mirrors and monsters.