Abe

Abe (阿部, Abe), otherwise known as Killer Machine Abe (キラーマシーン阿部, Kirā Mashīn Abe), is a second-year student at Ishiyama High School. Abe is also said to be one of the second year bosses.

Appearance
He is seen always wearing an orange sweat-shirt and has multiple scars on his face. Also seen wearing a black necklace around his neck. He has an intimidating appearance and a big build. Despite this, he is easily defeated when shot by a high-pressure water gun.

Personality
He is very aggressive, though he is great, not an adversary to Oga, he is also a subordinate to Kanzaki.

"Good Night" Shimokawa
A fellow 2nd-year leader of Ishiyama High, He's most likely friends with Abe & the Sanada Brothers. He's also one of Kanzaki's subordinates.

Sanada Brothers
Other fellow 2nd-year leaders of Ishiyama High and they're most likely friends with Abe & Shimokawa. They're also one of Kanzaki's subordinates.

Hajime Kanzaki
Despite him being a 3rd year leader of the Tōhōshinki (TKKH) along with Hidetora Tōjō and Tatsuya Himekawa, he is also the leader of the 2nd year leaders (excluding Aoi Kunieda because she's also a TKKH member) which includes Abe, Shimokawa, and the Sanada Brothers. This was proven in Episode 3 of the Beelzebub Anime.