The Geos or Ultimate Form Spectrobes are the most powerful Spectrobes on Spectrobes and Spectrobes: Beyond The Portals. They cannot be obtained by evolving an Evolved Form Spectrobe, you have to unlock them in a Sequence Battle or Card Input.

Kaio

Tindera

Zorna

Fulvina

Voltorn

Artezza

Shulla

Larrup