The Grundle (also known as a Dromaeosaurid Theropod Grundalicus) was a reptilian predator that roamed Ninjago in prehistoric times. By the time of the cartoon series, its species was long extinct, with a skeleton on display in the Ninjago Museum of History. Using the Mega Weapon, Lord Garmadon revived the beast's skeleton and it attacked the Ninja, before eventually being destroyed by Lloyd, who turned older in the process.