Mitsuru Tokieda has medium-length dark blonde hair, forming a bowl cut on his head. He also has green eyes. He is always seen wearing his Border uniform.
When he is in trigger mode, like the rest of his unit, he wears black leggings and a red, high collared athletic jacket with the A-Rank Border emblem patch on her right shoulder, and a long black stripe going down the middle of each sleeve.
Mitsuru is a calm individual, unlike the rest of his team. He doesn't get easily excited, and usually has a neutral expression on his face. Although he is very observant of other people, he never speaks unless he has something important to say.
Despite (or possibly due to) his levelheadedness, Tokieda has a quick reaction time, shielding Arashiyama from a shot at his blind spot, and saving Kitora from unavoidable bullets at the expense of being shot himself.
- "Mitsuru" (充? ) means "fill/to be full, supply", referring to his supportive fighting style. "Tokieda" (時枝? ) is composed with 時 ("time"? ) and 枝 ("branch, limb, twig, bough, knot"? )
- According to volume 1, he likes:Rice cakes, oranges, and cats.