Fushimi often displays himself as a cool-headed, though lazy and bored individual. He is described as being rather depressing, showing dislike in many things, yet little interest in activities that he does enjoy, or even his own future. Furthermore, Fushimi has shown that he is a pessimist, believing that "heroes" do not exist; rather, he believes that surviving in the world would only come out of the individual's own power.

He is quite intelligent, being able to solve complex mathematical problems within moments, simply by knowing the equation. He appears to enjoy playing video games, and shows a prominent distaste in vegetables or other compliments to his food's side dishes.

Fushimi's twisted personality.

Fushimi can often be far more twisted then he leads others to believe. He is cruel, bloodthirsty, and occasionally sadistic. During battle, Fushimi often sports a wide grin and a tendency to laugh giddily about a dangerous event. He also displays more evident signs of arrogance and superiority towards his opponents. Fushimi often boasts about his strength and speaks to his opponents in a more mocking tone. Nevertheless, Fushimi retains a somewhat carefree attitude during battle.

Fushimi dislikes most of his work's duties and a handful of the people that he is forced to work with, preferring not to spend time socializing with coworkers. As such, he also prefers not to participate in most of his Clan's special activities that does not involve paperwork or the sort. However, he will cooperate if necessary with little to no arguments, save for perhaps a few minor complaints. At the same time, he would often disregard his associates and act out on his own. While focused on an objective, Fushimi is willing to use any method possible to make his tasks quicker and easier, such as drugging innocent civilians. He would even attack several former allies without any hesitation just to accomplish his goal, displaying additional traits of ruthlessness.

Although displaying a pessimistic character, lacking enthusiasm, he still, deep in his heart respects his previous King, Mikoto Suoh, as often preferring his name with honorifics, which he seldom uses with others. However, it is noted in Side: RED and one of the short stories that he is also considerably afraid and intimidated by Mikoto, which is prominently shown when he raised his saber when Mikoto broke the Scepter 4 Jail, but couldn't use it against him, and was instead shaking at the thought of facing Mikoto head on. Even with different clans and different path of life, he still hasn't really given up on his best friend Yata Misaki, as his cause of despise rises from Yata's undivided attention towards the red king, which quite made a gap between two good friends. He is possessive towards him, as he grows jealous of the closeness between HOMRA members and Yata. He has referred in the Radio Drama 'Izumo's Room' that if he would have been in Yata's place, he would have followed his best friend to Scepter 4,