Kojiro is a tall young man who is large and muscular in stature, possessing very wide shoulders in comparison to his slender waist and unusually sizeable hands. His skin is a yellow straw-like color, and his head is shaped somewhat like a glue-dispenser with a lappet on top, along with seven "eye-holes" on his face from which he can release his Quirk.
His hero costume consists of a yellow, slightly baggy suit. Around his neck, wrists, and waist, he wears orange circular accessories which resemble the lower part of the cap of a bottle of glue, and around his ankles slightly thinner, taller versions of these.
Described as a gentle giant, Kojiro has been shown to be a "shrinking violet" in comparison to the rest of his classmates, similar to Koji Koda from Class 1-A. He often tends to stammer when speaking with his teammates during the Joint Training Arc, but despite this, Kojiro is shown to be an easygoing guy as he seems to get along well with his classmates, even the quiet Yui Kodai.
Enhanced Strength: Due to his big size, Kojiro is fairly strong, being able to carry another person on his back without trouble.
Cemedine (セメダイン,Semedain?): Kojiro's Quirk allows him to spray large amounts of a fast-drying glue-like liquid from the seven holes on his face. The liquid is sticky and can be used to trap people and attach things to each other. It is stated that he can control the speed at which his adhesive dries.
Glue Squall (グルースコール,Gurūsukōru?): Kojiro fires off his adhesive over a large surface area, causing that region to become sticky, prohibiting movement should one come into contact with it. Kojiro uses this in the battle against Team 4 of Class 1-A, during the fourth set of the Joint Training Battle, under Setsuna Tokage's command.
Kojiro's stats, according to the Ultra Analysis Book
Kojiro's surname contains the kanji for "ordinary, mediocre" (凡,bon?) and a type of Japanese door (戸,do?), and his first name contains "solidify" (固,ko?), "next" (次,ji?) and "son, male" (郎,rō?), which is also a common male name suffix.
Kojiro's surname, Bondo, is homophonous with the Japanese pronunciation of the English word "bond," and the "koji" in his first name can also mean "stubbornness" when written differently.
This could be in reference to his Quirk, which is named after a kind of adhesive that is popular in Japan.
Kojiro's room is filled with plastic models, which he likes to put together.
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