In Heizou's youth, he was rebellious and disliked following rules. Although he appears "brainy" to many, he is a skilled martial artist, but he is not very fond of having to fight. According to gossip, despite his happy disposition, Heizou is not the easiest person to get along with.

He was taking a day off from his detective work as he visited the amusement park. He likes riding the Disco Pang Pang. As he saw you losing balance and tumbling towards him, he reached an arm out to catch you.