Denji is initially portrayed as a rather naive and simple-minded individual, driven primarily by his desire for a normal life and basic pleasures like food and shelter. However, he possesses a strong sense of loyalty and develops a deeper sense of purpose as the series progresses, especially in his relationships with his friends and allies. Denji's most notable ability is his form into a chainsaw-wielding demon known as "Chainsaw Man." In this form, he gains immense strength, speed, durability.