|Age:||18 (Ultraman Tiga)|
27 (Ultraman Dyna)
|Home world:||Earth (Giants of Light Universe)|
|First appearance:||Ep. 1: The One Who Inherits the Light|
|Last appearance:||Ep. 50: Final Chapter II: Solar System Annihilation|
|Number of appearances||52 (Tiga)|
|Portrayed by||Yoichi Furuya|
Jun Yazumi (ヤズミ・ジュン Yazumi Jun?) is an 18 year old computer Genius. His main job is to analyze monsters, technology, substance etc, and to research them for information. The system he programmed, named Acachic Record, is a power search engine. It can access and search through any kind of data in the world, not only text data but also image, movie, sound and so on, and of course from anywhere. Also it seems he can access protected data bases.
His only dissatisfaction is that Rena treats him just like her younger brother, not an adult though sometimes he did sees her as an older sister figure while addressing her in the name 'Onee-chan' (sister in Japanese).
He returns in Ultraman Dyna Episode 50 to help with activating the Neo Maxima cannon.
- His actor Yoichi Furuya actually only 15 years old when he was acting as Yun Yazumi in Ultraman Tiga.