Gaku is a relaxed and laidback man, talking calmly with Slur about the JAA and comparing their nervousness to a returning student going to school rather than a life-and-death situation, other examples of Gaku's nonchalant attitude can been seen when he's eating snacks whilst in the middle of a fight, using the restroom after getting blasted through a door, and by him playing video games during an important meeting. Besides his extremely casual behavior, Gaku can also be quite cold and cruel.