Tetsuya Zeus (是臼 鉄矢, Zeusu Tetsuya) is the temporary male protagonist during the second part of the series. He is an esper and a student at ESP Academy, who is secretly an ESP Police agent that tasked to protect Ren Jomaku. He eventually rescued Ren from the terrorists. However, it's later revealed that he is actually the son of ARES' president.
Zeus is a muscular young man with medium length brown hair and various scars on his body.
He is usually expressionless making him enigmatic towards the others and seemingly cold.
Metal Bending: Zeus, by the Glowing Fish, has been given the ability to bend any metal and change its shape, making him nearly invulnerable against metal weapons. The more complex is the metal object he bends the more powerful the weapon he create can be, as seen when he turned a police car into a mecha-like armor. He usually uses his powers combining it with his great melee fighting skill to overpower his enemies.
- In Greek Mythology, Zeus is the god of sky and thunder.