Hatori is the Vice President of Marketing at Yotsuba. He is the illegitimate son of the company president and uses this fact to benefit himself. Death Note 13: How to Read states that he "appears to be something of a lightweight" and that he cannot handle the pressures of the meetings.
Hatori is a married man with children and a graduate of the Futatsubashi University Literature department with an interest in ceramics. How to Read 13 also states that he dislikes vegetables.