Some species fake other fireflies' glow patterns to lure in blokes and eat them, which is proper dark.
Fun fact: Some female fireflies mimic the flash patterns of other species to lure their males as prey.
Covered head to toe in scales made of the same stuff as your fingernails, which is certainly a choice.
Fun fact: Its tongue, anchored near the pelvis, can extend longer than its entire body to reach insects.