Sogou Tokiwa

Sougo is described as an ambitious young man with a strong desire to be king. This desire stems from a recurring dream he has had since his childhood, where a man in black, who would later be revealed to be Swartz, had encouraged him into becoming one in order to save the world. Because of his eccentric dream, Sougo did not have a lot of friends growing up, with his sole companion being a toy robot, a fact that Junichiro would confide later with Tsukuyomi, saying both she and Geiz were the first closest friends he ever had. Sougo also exhibits fanatical admiration towards the presence of regal figures (i.e.: Kuroto Dan) and ordinary people who possess benevolent king-like qualities (i.e.: Eiji Hino), as he believes he can learn from individuals who have succeeded in their ascension and also understand what is needed for one to be a benevolent ruler, resulting in him becoming one step closer to accomplishing his own ambitions.

His views for kingship changed once he discovered the existence of his tyranical alternate future self, and temporarily abandoned his quest for kingship. However with support from Geiz, Sougo began displaying emotional and psychological resilience when facing such moral dilemmas; even when confronted by the Mirror World manifestation of his own dark side, Sougo persevered and adapted, and was able to come to terms with his inner darkness and decided to risk it all in finding out if he truly does become the evil tyrant he was destined to be. Despite so, Sougo is still someone who is sensitive towards people who tell him that he will or recommend that he become an evil demon king, despite him on several occasions voicing out his intentions to become the very opposite.

Sougo is a peaceful and genuinely kind man at heart who confidently feels obligated to show compassion and empathy even towards people who have committed horrible deeds, such as Yuko Kitajima, Heure, and Ora, as he feels it is a quality that kings should possess. He will gladly put himself in danger in order to cease a conflict, a trait even Tsukuyomi does not fully understand. He is also very trustful towards others, and had no doubt that Geiz would use the Wizard Ridewatch and defeat Another Wizard in 2012.

Sougo also showed an inability to come out with his feelings, hiding the fact that he genuinely felt lonely after Geiz and Tsukuyomi left and continued insisting he was fine. It wasn't until Junichiro built up the courage to actually scold him over this, advising him to just come out with his feelings. This encouraged Sougo to admit his loneliness to both Geiz and Tsukuyomi and asked them to return to 9 5 DO.

Despite his peaceful nature, it doesn't mean that Sougo never shows anger. The first example was right after he discovered the result of the future he caused and witnessed the man he feared to become, and attacked Ohma Zi-O to no avail. After Heure was killed by Ora, and his death was mocked by Another Drive, it left Sougo in a rage and he mercilessly attacked and killed Another Drive. Following Swartz informing of three impossible choices to stop him, Sougo couldn't do anything but scream Swartz's name in grief and anger. That anger and rage took a turn for the worse after Geiz's death, who shielded him from Another Decade's attack. Combined with Tsukuyomi's supposed betrayal and the fact his life was manipulated by Swartz this whole time, Sougo then accepted the power of Ohma Zi-O and defeated Swartz with no hesitation. Despite his transformation into Ohma Zi-O, Sougo was able to not let his grief corrupt him, leading him to not go on the path of villainy like his future self did, but instead restore the multiverse back to normal, hence living up to his ambition of becoming the "greatest, kindest demon king".

Because of his optimistic approaches, Sougo adds the verbal tic "Feels like it" (気がする Kigasuru) at the end of most of his sentences.