Zen is a child form Spectrobe that evolves into Gazen and then into Totsuzen. Zen can be excavated as a Zenpod in its fossilized state.
Zen (child/first)is a small fire based spectrobe that is monkey-like with a slender, curved body. It has very large eyes and ears, and has two spokes that protrude from its shoulders.
Gazen (adult/second) is a large red baboon-like Spectrobe. On its body are numerous pipes which hot steam comes from when it gets angry. Its two large fists are used during battle.
Totsuzen (evolved/third) is a large ape-like Spectrobe that uses its powerful fists in battle and its body is covered with vents that blow out steam when it gets angry. It is dark red with various yellow and white markings on it.