Hologramps

Grandpa Fukanaga -- a.k.a "Hologramps"  is the sensei of the Supah Ninjas and Mike's grandfather. A hologram carrying the family ninja legacy, he guides the Supah Ninjas and trains them in an underground high-tech dojo. He acts as the spiritual leader of the team, and is the heart of this group.

Legacy:
Hologramps was once a ninja of the family from genoratons of ninjas.