He is the leader of the elves and tries to take over Greenvale. Erasmus also captured the green minions and sent the flytraps to take over Greenvale. The Overlord invaded Erasmus's domain and Erasmus sent elves to take care of the intruders. Erasmus was killed by the Overlord and his minions. In his final words, he tries to tell the elves that it wasn't the dwarves but Grenville misinterprets it and becomes the new leader of the elves.