Hiryu Kakogawa/Another Rider Zi-O

Hiryu Kakogawa (加古川 飛流 Kakogawa Hiryu) is a young man who transforms into Another Zi-O (アナザージオウ Anazā Jiō), an Another Rider derived from Kamen Rider Zi-O.

Personality
Hiryu can be described by his obsession for vengeance and overall animosity towards Sougo. This vindictive nature emerged following the sequence of traumatic events which resulted in the death of his parents, to which he has long since held Sougo responsible. The impact of this tragic event was substantial as Hiryu developed immediate resentment towards Sougo for his comparative good fortune.

His single-minded enmity for Sougo and his lack of understanding over the actual circumstances of the events, made Hiryu easily susceptible to manipulation, as Swartz was easily able to recruit him upon discovering Sougo was a mutual target. This singular focus makes Hiryu a troublesome, and deadly adversary for Sougo and his ferocious drive makes him one of the more dangerous Another Riders. Yet beneath the darker emotions, Hiryu is essentially an emotional-wounded man consumed by grief as evident when Sougo extends his sincerest apologies, invoking deeply rooted sadness.