His interest in European literature and language was shown in his gestures and mannerisms, his dialogue often peppered with random phrases of English, French, and Italian. In the beginning of Tokyo Ghoul, Tsukiyama appeared to be a confident, friendly, and intelligent ghoul. However, these were merely acts to lure his "prey" into the Ghoul Restaurant and to conceal his eccentric, cruel, and selfish personality. He considered himself a strong predator who would seek to devour the finest meals.