Traffic Light consists of three lights, Green Light, Yellow Light, and Red Light, each in a constant state of a specific emotion. Green Light is always happy-go-lucky and enthusiastic, Yellow Light is dull, apathetic and unexcited, and Red Light is in a permanent state of anger and fury. While Green Light is passionate and energetic about nearly everything, Red Light seems enraged and irritated by Green Light's excitement. Meanwhile, Yellow Light is ambivalent to the two, only responding "Meh."