Mugen is Rei's partner. He is actually a card, Mugendra. He doesn't seem to like Ian, though they can get along.

Saikyou Ginga Ultimate Zero: Battle Spirits is an anime inspired by Bandai's Battle Spirits trading card game and produced by Sunrise. It is not related to any previous Battle Spirits anime work.

Rei is an adventurer called a "Card Quester." He wishes to collect strong cards scattered throughout space, and a battle with his rivals unfold.

(Source: Battle Spirits Wiki, ANN)

__Height:__ 157 cm
__Agency:__ Office Osawa

[Website](http://whv-amusic.com/iguchiyuka/index.html) | [Profile](http://osawa-inc.co.jp/women/iguchiyuka/) | [Twitter](https://twitter.com/yukachiofficial) | [Instagram](https://www.instagram.com/ooo31_iguchiyuka_31ooo/) | [Anison](http://anison.info/data/person/15320.html) | [Wiki (en)](https://en.wikipedia.org/wiki/Yuka_Iguchi) | [Wiki (jp)](https://ja.wikipedia.org/wiki/%E4%BA%95%E5%8F%A3%E8%A3%95%E9%A6%99) | [Youtube](https://youtube.com/@officialyoutubechannel3974?si=9AjlJ6Ujj2Vw1CiU)

__Non-anime roles:__
- Liter - Goddess of Victory: Nikke (VG)
- Otaru Rio - Nogizaka Haruka no Himitsu: Cosplay, Hajimemashita (VN)
- 37 - Reverse: 1999 (VG)
- Koleda Belobog - Zenless Zone Zero (VG)