In How to Train Your Dragon: The Hidden World, the dragon hunter who hunts Toothless is Grimmel the Grisly.
Grimmel is introduced as an experienced and calculating dragon hunter. He claims responsibility for killing the other Night Furies, making Toothless especially important to his plans. His pursuit helps drive Hiccup’s decision to search for a hidden refuge where dragons can escape human threats.
Grimmel uses traps, poison-coated projectiles, and trained dragons to attack Berk and control the situation. His methods contrast with Hiccup’s belief that humans and dragons can cooperate. The conflict therefore concerns more than capturing one dragon; it tests whether Berk’s new way of life can survive.
Drago Bludvist is the principal human antagonist of How to Train Your Dragon 2, while Eret is a dragon trapper who later becomes an ally. Neither is the hunter named in the third animated film.