Editing Apocalypse Zero (section)

=== Reverse Cross High School ===
;{{Nihongo|Tsumiko Horie|堀江 罪子|Horie Tsumiko}}
:{{Voiced by|[[Mitsuko Horie]]|[[Sherry Lynn]]}}
:A girl who goes to the same high school as Kakugo. Although frequently called unattractive and chubby, Horie is a kind and bold girl who falls in love with Kakugo after witnessing him destroy the city's monsters. She is later kidnapped by Chidokuro and turned into a Tactical Fiend, thus forcing Kakugo to fight against her, until he kisses her, which results in her turning back to her normal self. Series creator, Takayuki Yamaguchi named her after Mitsuko Horie (whom he's a fan of), in fact, her name is actually an anagram for "''Mitsuko''". Horie herself would later go on to voice Tsumiko in the OVA.

;{{Nihongo|Hiroshi Haoka|覇岡 大|Haoka Hiroshi}}
:{{Voiced by|[[Toshiyuki Morikawa]]|[[Hiroshi Nagano]] (Manga Video version); [[Doug Stone (voice actor)|Doug Stone]]}}
:A feared delinquent at the school, he's a childhood friend to Horie and resents anyone who goes after her. Haoka initially dislikes Kakugo, but eventually comes to respect him. In the OVA, he is injured by Eikichi after managing to carry the case containing Kakugo's Zero armor to the battle, but reappears alive during the finale.

;{{Nihongo|Ponta Takada|高田 ぽん太|Takada Ponta}}
:{{Voiced by|[[Daisuke Sakaguchi]]|[[Mari Devon]]}}
:One of Haoka's friends, usually seen with Pyonsuke. He is attacked by Dogumakuro's Flower, but is saved by Kakugo. He's very good at drawing, as shown in Volume 4 where he drew a rough sketch of Chidokuro when the school guards asked him to identify Horie's captor.

;{{Nihongo|Pyonsuke Fuji|藤井 ぴょん助|Fuji Pyonsuke}}
:{{Voiced by|[[Hiro Yūki]]|[[Lenore Zann]] (credited as Zan)}}
:Haoka's other friend. Generally seen with Ponta. He often carries a sword for protection.

;{{Nihongo|Aoki|青木|Aoki}}
:{{Voiced by|[[Sara Nakayama]]|Jessica Gee}}
:A friend of Horie. She is distinguished by the bandages she always wears over her face; it is never revealed why she wears them.

;{{Nihongo|Hoshino|星野|Hoshino}}
:{{Voiced by|[[Ryōtarō Okiayu]]|}}
:A senior student and leader of a group of volunteers for the school's protection. When Harara (whose taken over Eikichi's body) begins exudes killing intent which causes all the other students present (including Hoshino's own lieutenants) to collapse, he's one of the few to withstand it.

;{{Nihongo|Mr. Zenigata|銭形先生|Zenigata-sensei}}
:{{Voiced by|[[Shigeru Chiba]]|[[Steve Kramer (actor)|Steve Kramer]]}}
:One of the teachers at the school. Despite his job, Zenigata doesn't really take teaching seriously, even going as far as drinking alcohol on school grounds and sleeping through his classes while playing a recording to do his work. He's also very dismissive of, and shows little worry for, his students but secretly is quite supportive of them.

;{{Nihongo|Principal|校長先生|Kōchō-sensei}}
:{{Voiced by|[[Kenichi Ogata (voice actor)|Kenichi Ogata]]|Bob Papenbrook}}
:The head of the school in New Tokyo. He is a [[Stalking|stalker]], even having wired Tsumiko's uniform to spy on her, but he really cares for his students. After Tsumiko is kidnapped by Chidokuro, he and other students unsuccessfully try to rescue her. He later appears to sacrifice his life to save them all from one of Harara's demons, but is later on revealed to be alive when he is regurgitated, along with a number of skeletons.

;Kazu Shimada
:{{Voiced by|[[Shin-ichiro Miki]]|[[Dave Mallow]]}}
:A student at Kakugo's school, he falls victim to Hamuko. After having his face sucked off, he is devoured by her and later regurgitated in a partially-digested state during Hamuko's battle with Kakugo, dying shortly afterwards. His body is later cremated by Kakugo after the fight.

;Hiroko Uchiyama
:{{Voiced by|[[Yuka Imai]]|[[Michelle Ruff]] (Credited as Georgette Rose)}}
:Shimada's girlfriend, she was killed by Hamuko right in front of him.