This vivid pink botaniform constantly coos and twitters in a complex pattern that does not end as long as the creature's head is intact. Psychic vibrations carried in this melody have a sleep-inducing effect on most intelligent beings, causing almost instant loss of consciousness at close range.

Lullabile feed by spraying a highly corrosive, sludge-like digestive enzyme from their throat to break down plant or animal matter. The remains are absorbed through the monster's feet.