Root monster

"Root monsters" were a species of demons that resembled trees. They fed by trapping their victims with their prehensile roots and draining them of their life force. However, they would die if they tried to feed on vampires. Despite having the appearance of trees, their bodies were not composed of wood, thus vampires were immune to their roots. One of these demons dwelled in Los Angeles.

Behind the scenes
The demon's species nickname is mentioned in the episode's shooting script

Appearances

 * "Couplet"