Jun Tezuka first appears following Nami at her school and he is the second oldest male in the Tezuka family at 27 years old. He is a soft spoken individual, and apparently he has a "mother complex" according to Rei and Anzu. He is the second child in the family to acquire powers. His power appears to be the ability to control electricity. He and Rei are the only members of the family that join Taisuke on his assault on the US Naval Base housing the Heart of Akuro. He wandered throughout Asia in search of peace of mind and learned martial arts in the process, which he later taught Taisuke.