Despite being his friends, Matsuda and Motohama are both jealous of Issei's relationship with the girls of the Occult Research Club and constantly spread bad rumors about Issei, such as Issei being a sadist who blackmailed Rias and Akeno into doing sexual acts, forcibly taking advantage of Koneko and Asia and even seducing the likes of Yuuto Kiba.
Other such times they would get enraged and brutally assault him. Issei then informs Matsuda and Motohama about his relationship with Rias, where the news causes them to be depressed.
The three have known each other for a long time and enrolled into the academy together on their first year due to the large quantity of girls in the school.
In the anime, the trio are all huge fans of an adult video actress named Momo Momozono, who portrays the 'tokusatsu heroine Kaben Rider Pinky (花弁ライダーピンキー Kaben Raidā Pinkī? "Pedal Rider Pinky", based on the Kamen Rider Series).
Being raised in a family of swordsmen, Yukihiko shows decent skills in sword-fighting and wielding his Holy Sword.
) is a second-year student who is in the same class as Asia and 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).Motohama is known to have better results than both Issei and Matsuda and appears to be the most level headed of the trio.They also appear to be friends with Asia, who know that she lives with Issei and warn her to be cautious of any possible perverted attempts he might attempt.According to Motohama in the anime: Christie (クリスティ Kurisuti) is a gorilla who Abe claims is a Yuki-onna.