Soshiro Hoshina

Soshiro is an athletic young man of average height with a lean and muscular build and dark violet short hair in a bob cut style. His purple eyes are closed most of the time and he always has a jovial expression on his face, except when serious scenarios made him display an imposing expression with his eyes opened.

When on-duty, Soshiro wears the usual Defense Force uniform. He also wears the standard combat suit used by Defense Force members when on the battlefield. While wearing Numbers Weapon 10, Soshiro wears a combat suit with light-purple scale-like armor with green outlines, a long mechanical tail and Kaiju No. 10's signature eye in the middle of the chest plate.

As a child, Soshiro was mostly identical to his current appearance, most wearing a traditional training outfit.