Professor Poseidon Jackson

"I Used To Be Kaijudo Duelist Just Like You Percy"

Posedion is the Will Professor in his Son's School and as even also Professor Jackson was very glad that He retire and be with with his Son and as also Poseidon was used to be Kaijudo Duelist just like his Son was

He summons Water and Nature creatures back in old times, Poseidon was the gladful father to Percy to join Manny and other students to fight the Darkness Army