Vulcans! The pure Vulcan children's daemons are various shapes, and one is seen to change, but by and large little Spock's is the most erratically formed of the group (and the only one to ever take the shapes of Earth creatures), which serves as part of the ostensible justification for the bullying.

Now James Tiberius Kirk, daemon changing with frantic excitement on his shoulder, is recklessly driving!