Vent is quite kind and determined, but also reckless, hot-headed, and easily volatile. Because of his disposition, he got in trouble more often than not (such as his rapid change in attitude when someone talks about Slither Inc. or when he attacks Prometheus). He also possesses a desire to protect those around him, due to losing his mother right in front of his eyes, always saying, "I'll protect everyone!" or "Give me the power to protect everything!" He had a deep bond with and respect for Giro, calling him "boss" ("Senpai" in the Japanese version), and having a sort of mentor-student relationship with him. According to Giro, he was a pain; having grown up as a lonely child, Vent seems to be always rude to the clients. When he is angry, Vent tends to be reckless