Tomarezu of the Tsuchinoko

Tomarezu of the Tsuchinoko is the first Yuumajuu to attack, able to dig Underground and spew out a green toxic sludge that can melt humans down into slime. He is destroyed by Groundion's Groundion Eraser. Tsuchinoko is a hammerspawn, a legendary snake-like cryptid from Japan. Tomarezu's name comes from the movie Tremors.