Argos

Argos (アルゴス) is Kamen Rider Dark Ghost (仮面ライダーダークゴースト), a villain Rider who appeared in the Kamen Rider Ghost Summer Movie. He later gains the Extremer Driver and transforms into Kamen Rider Extremer (仮面ライダーエクストリーマー).

Life and Death
Argos was evidently born at some point by the mid-19th century at the latest. The first born son of what would become the Gamma royal family, he was joined by a sister, Alia, and two brothers, Adel and Alain. Living in the Gamma World, Argos would spar with his youngest brother, Alain, teaching him to fight. As recounted by Alia, their mother died following the family's arrival in the Gamma World. Argos followed soon after, having succumbed to an illness. This drove his father, the Emperor Adonis, to despair, leading him to strive to create a perfect world where death would not exist.

Becoming Dark Ghost
Resurrected, Argos was granted a Ghost Driver by Sennin, allowing him to transform into Dark Ghost. Sennin sent him on an as yet unknown mission involving the granting of Sennin's wish, while entrusting Daigo Fukami to guide him.

Gathering the Ghost Eyecons
Vowing to claim every Ghost Eyecon, Argos, as Dark Ghost, took to hunting historical figures who had emerged in the flesh within a distinct Eyecon-shaped world in which Argos resided under as yet unknown circumstances, starting by collecting the Eyecons of Ikkyu, Pythagoras, Kamehameha, Shakespeare, Galileo, Columbus and Nightingale. Defeating Napoleon, the disturbance created by Argos' was sensed by Sennin who, noting that his plan had gone terribly wrong, feared that Argos was gathering the Eyecons to create one particular Ghost Eyecon which could spell disaster.

Argos then sent his three Dark Necrom minions to collect the heroic Eyecons, both in his world and the "other world", proclaiming that Takeru Tenkuji would make his dream a reality. As Dark Ghost, Argos saw off the Dark Necroms as they boarded their Iguana Ghostrikers before departing their world for Earth.

Post-mortem
Prior to his final confrontation with Adel, Takeru Tenkuji initially recognized the Kamen Rider Dark Ghost who welcomed him to the Gamma World as Argos, only to find that it was Edith having assumed the Rider system for himself.

Chou Super Hero Taisen
An iteration of Kamen Rider Dark Ghost was one of a trio of Dark Riders from the Game World whom attacked Kamen Rider Ex-Aid Double Action Gamer Level X. However, Ex-Aid ultimately overcame the three Dark Riders.

Personality
To be added

Family

 * Adonis - Father
 * Alicia - Mother
 * Alia - Younger sister, Kamen Rider Dark Necrom P
 * Adel - Younger brother, Perfect Gammaizer
 * Alain - Youngest brother, Kamen Rider Necrom

Powers and Abilities
To be added

Damashii
Dark Ghost's forms are called Damashii (魂), accessed using the Ghost Eyecons. He also bears a headpiece called the Persona (ペルソナ), which gives off a glow effect with the rest of his body. The Persona changes with Dark Ghost's numerous Damashii forms, as well as serving as a prefix title for all of the Damashii forms' helms.

By pulling and pushing the Ghost Driver's lever a second time after transforming, Dark Ghost can activate an Omega Drive (オメガドライブ) finishing attack tied to the Ghost Eyecon currently being used. If he pulls and pushes the lever four times, he can instead execute an Oomedama (オオメダマ) special attack.

Devices

 * Ghost Driver - Transformation device as Dark Ghost
 * Ghost Eyecons - Transformation trinkets.
 * Extremer Driver - Transformation device as Extremer.

Weapons

 * Gan Gun Saber & Sunglasseslasher - Dark Ghost's personal weapons.

Portrayal

 * Argos is portrayed by Ryo Kimura (木村 了). As Kamen Rider Dark Ghost, his suit actor is Yasuhiko Imai (今井 靖彦). His suit actor as Kamen Rider Extremer is unknown.

Etymology

 * Argos' name is from the 100-eyed giant in Greek mythology as well as his Kamen Rider Extremer form also had 100 "eyes".