Master Ecko is the leader of the Shadow Elves. The Shadow Elves were once Rock Elves, but they encountered an imprisoned Shadow (or the Beta-Phantom) and absorbed it's properties. They are perhaps the only race on Jade who know the truth behind the Tournament of Arms and the mystic ziggurats that guard against the Shadows' return.

He is also one of Ancient Gina's underlings and, along with Rhoaton, is currently helping her keep Dreadwing in check so that he doesn't harm anyone while helping the construction of the Infinity Engine.