Indecisive, unsociable, and shy. He is highly intelligent, excels in his studies, and is an avid reader. While he is kinder and more caring toward his friends than anyone else, he is actually a coward who fears loneliness. He often ends up acting out of self-interest rather than listening to his friends' opinions. His mindset changes frequently.

On the surface, she is violent and blunt, but in reality, she is kind-hearted and cares deeply for her friends. While she faces things head-on, she also has a tendency to become emotional. She develops a deep bond with Kaneki throughout the story.

Calm, collected, and expressionless: No matter how dangerous the situation or how powerful the enemy, he carries out his missions without changing his expression. Polite and gentle: He usually carries himself with soft manners and uses polite language. Ruthless with overwhelming power: He shows no mercy toward Ghouls and displays the coldness that earned him the title 'Reaper of the CCG.' In truth, as the 'One-Eyed King,' he possesses a deep spirit of self-sacrifice, dedicating his life to ending the twisted world of humans and Ghouls.

She openly enjoys the pain and despair of others, brutally murdering both humans and Ghouls without a shred of guilt. In human society, she poses as a best-selling author.

Gentle and compassionate: As the manager of the cafe 'Anteiku,' he kindly protects the weak and displaced Ghouls, holding a strong conviction to coexist peacefully with human society.