Kaito Shishidou, a young President of Shishido Heavy Industries, he has protected Kisarazu as the lion-themed GAION for a long time. Recently, he hands over its role to Tohma. He is like a reliable elder brother. Kaito briefly succumbed to an evil influence and became the Shadow Hound.
Kaito as GAION
GAION's second armor update
Kaito as Shadow Hound