Tooth Fairies are ravenous, multi-legged winged creatures appearing in Hellboy II: The Golden Army.
The tooth fairies hail from the Black Forest,Germany. They feed largely on calcium, such as that in flesh, tissue and bones, and due to its higher concentrations of the aforementioned mineral, they prefer the teeth (hence the name). When attacking live prey, they target a victim's teeth, though they will eat their prey until nothing remains but droppings. They swarm in great numbers and are capable of overwhelming a humanoid target; stripping them of flesh in seconds. Despite their savage behaviour, they are sentient and capable of communication, though not in human languages. They were considered contraband, likely for their destructive nature.
The tooth fairies were illegally purchased by Prince Nuada at the Troll Market, starved, and then released into an auction house, killing over 70 people. Later, agents of the BPRD investigated the disturbance. Among them were Hellboy, Abe and Liz. After a vicious fight which claimed the lives of two human BPRD agents, Liz uses her pyrokinesis to blast through the auction house, roasting the fairies alive and sending Hellboy flying out of a window and into the public view. Later, Johann Kraus uses teleplasty to reanimate a fairy killed when Liz unleashed her powers. It was able to communicate that it was purchased in the Troll Market before it expired again.