Editing Apocalypse Zero (section)

=== Main ===
;{{Nihongo|Kakugo Hagakure|葉隠 覚悟|Hagakure Kakugo}}
:{{Voiced by|[[Kōichi Yamadera]]|[[Tomokazu Seki]] (Manga Video version); [[Yuichi Nakamura (voice actor)|Yuichi Nakamura]] (Exoskull Zero Drama CD); [[Lex Lang]]}} 
:The main protagonist of the series, owner of the Fortified Armor Shell known as {{Nihongo|Zero|零(ぜろ)}}. Unlike Harara, Kakugo stuck to his duty to protect innocent citizens in trouble. This leads to several encounters with a large number of monsters which inhabit the city until finally he comes face-to-face with Harara himself. Kakugo is a stern and humorless, yet compassionate and honorable person, wearing glasses and a white uniform inspired by the regimental uniforms worn by the [[Imperial Japanese Navy]]. Kakugo is a master of the {{Nihongo|Zero Defense Form|零式防衛術|Reishiki Bōei-Jutsu}} of martial arts and has eight steel balls embedded in his body, which he can absorb into himself to coat his skin in metal or eject from his body to use as weapons. His signature technique is {{Nihongo|Impact|因果|Inga}} (lit. "cause and effect"), which is a counter move that redirects all of the energy of an opponent's attack back to them. Zero is mentioned to be the prototype for all other Fortified Armor Shells and is inhabited by the vengeful souls of the 3000 Japanese soldiers sacrificed to create it. The spirits within Zero form a [[Group mind (science fiction)|collective consciousness]], manifesting as a mass of grimacing skulls, and are able to communicate with Kakugo and advise him in battle.
:His armored form resembles a red-eyed [[tokusatsu]] superhero with a long scarf similar to the ''[[Kamen Rider]]'' series.
:[[Capcom]] artist [[Kinu Nishimura]] had said that Kakugo was the main inspiration for ''[[Cyberbots: Full Metal Madness]]'' protagonist, Jin Saotome.
:Kiyotaka Ishimaru from the ''[[Danganronpa]]'' franchise bears resemblance to Kakugo.

;{{Nihongo|Harara Hagakure|葉隠 散|Hagakure Harara}}
:{{Voiced by|[[Megumi Ogata]]|[[Akira Ishida]] (Manga Video version); [[Mona Marshall]]}}
:Kakugo's older brother and the main antagonist of the series. Harara possesses the Fortified Armor Shell {{Nihongo|Kasumi|霞(かすみ)}}. Bonding with Kasumi caused his body to assume a [[hermaphrodite|hermaphroditic]] form and drove him to insanity, killing his father Oboro in combat and defeating Kakugo. Believing humanity responsible for the death of the environment, he has become determined to destroy all humans with the aid of beings known as Tactical Fiends. Like his brother, Harara has multiple steel balls embedded in his body which he can absorb to coat his body in metal and increase his strength. His signature technique, {{Nihongo|Spiral|螺旋|Rasen}} , draws energy from the Earth into a strike that can force an opponent's internal organs to violently erupt from their body. The Fortified Armor Shell Kasumi has a feminine form and is inhabited by the malicious spirit of Mei Inukai, whose endless hatred for humanity after her infant son was sacrificed during Kasumi's creation drives Harara's desire to exterminate humanity.
:After Kakugo defeats the Tactical Fiend Eikichi, Harara directly possesses Eikichi's body in an attempt to finally destroy Kakugo. In the ensuing battle, Kakugo manages to emerge victorious over his sibling, leaving Harara in a coma for most of the manga.