To equip this skin, go to the "Arsenal" page, then click on Ash's "Appearance" tab. The skin will be under the section labeled "Physique". The skin consists of two parts which can be equipped separately: the Helmet, which can be equipped under the Helmet tab, and the Body skin under the Skin tab.
- The name Koga is likely derived from the Kōga-ryū, an ancient, legendary school of ninjutsu based off the region of Koga (now named Kōka City) in Japan.
- The arm guards extend during his 4th's animation and replace ashs' normal daggers.