Sighborg Y is a humanoid-looking robot with a blank expressionless face. His body is green with a orange crescent shape on his back held by a screw. His arms are tube-like and his hands are teardrop shaped and yellow. He has a white center with a yellow gem located in the middle, orange legs with claws on his feet, and has a name tag on his left chest saying 山田 (kanji for Yamada).
His Soultimate turns people and other Yo-kai into other Kai-borgs with his Belly Button Beam.
Sighborg Y was one of the two winning submissions for the second Yo-kai Contest held in 2015 in Japan, the other being Darisu.
Interestingly, the narrator in his mini corners is the same person who provides his in battle dialogue in the game.
There is a glitch where if a Yo-kai turns into Sighborg Y while charging up their Soultimate, it will look like Sighborg Y is doing a different Soultimate.
He reappears again in EP142, though it is unknown how he got back to Earth.
