Kuoh Academy Students

The students of the Kuoh Academy who plays minor recurring roles.

Matsuda

 * Voiced by: Yasuaki Takumi

Matsuda (松田) is one of Issei's best friends who made up the "Perverted Trio" (変態三人組 Hentai San'nin-gumi) a trio of the biggest perverts at the Academy. Matsuda is a self-proclaimed lolicon. Matsuda's nicknames are "Perverted Baldy" (エロ坊主 Ero-bōzu) and "Sexual Harassment Papparazzi (セクハラパパラッチ Sekuhara Paparatchi). He and Motohama are jealous of Issei's relationship with the Occult Research Club, and constantly spread bad rumors about Issei, such as Issei being a sadist who blackmailed Rias and Akeno into sexual acts. He doesn't know that Issei and the Occult Research Club members are Devils.

Motohama

 * Voiced by: Takuro Nakakuni

Motohama (元浜) is the other friend of Issei's who made up the "Perverted Trio". Motohama has the ability to calculate a female's body measurements just by looking which earned him nicknames such as "Perverted Glasses" (エロメガネ Ero-megane) and "Three Sizes Scouter" (スリーサイズスカウター Surī Saizu Sukautā). Like Matsuda, he constantly spread bad rumors about Issei. He doesn't know that Issei and the Occult Research Club members are Devils. Motohama is known to have better results than both Issei and Matsuda.

Aika Kiriryu
Aika Kiriyu (桐生 藍華 Kiriyū Aika) is a second year student who is in the same class as Asia and the Perverted Trio. She wears spectacles and like Motohama, she has the ability to calculate a male's "manhood" size just by looking. She likes to tease Asia about her crush on Issei. One of her most well-known traits is her habit of giving lewd advice to Asia, such as telling her about "skinship" and encouraging her to try it with Issei in the bathroom and warning her not to dilly-dally in making a move on Issei before the other girls could get him.

Girls of the Kendo Club
The Girls of the Kendo Club (剣道部の女子生徒達) are anime-only characters. They are often subjected to Issei, Matsuda, and Motohama's lecherous peeping, in which they and the rest of the club retaliate by beating them with their shinai. The anime also named two of the girls: Murayama (村山) and Katase (片瀬). Both who are in the same class as the Perverted Trio. A ccording to Motohama in the anime, Katase's measurements are B78.5-W65-H79 cm (B31-W26-H32 in), while Murayama's body measurements are B84-W70-H81 cm (B33-W28-H32 in).

Kiyome Abe
A third year student in the Kuoh Academy and captain of the Tennis Club who comes from a family of Beast Tamers.

Christie

 * Christie (クリスティ Kurisuti) is a gorilla who Abe claims is a yuki-onna.

"No-Head" Honda

 * "No-Head Honda (ノーヘッド本田 Nōheddo Honda) is a set of headless armor. He is able to give immense strength to its wearer but the person wearing it cannot take it off easily due to a curse.