A Trollhunter is a warrior chosen by the Amulet of Daylight to be the protector of the worlds of Trolls and humans from evil Trolls, like the Gumm-Gumms. The title began in the time of Merlin who created the Amulet to choose a champion capable of being the protector of the Trolls until the day of his death. Once a Trollhunter perishes, the Amulet chooses a new warrior to take the title. The title has been passed down to Troll to Troll for generations through centuries. The current Trollhunter is Jim Lake Jr., the first human (later human-troll hybrid) to be chosen by the Amulet.