Thornweed

Thornweed is the test subject for King Fanges in Curse of the Vine Dragon. Thornweed is secretly Japain Kaa's son, and is the only non Power Dragon allowed in Lavaburst Cave. \

Trivia

 * Thornweed seems to go crazy when given the Vine Curse Potion, as he tries to harm his friends, which is something he never does.