Ran is a short boy with light blue hair and blue eyes. He almost always wears a dark blue T-shirt over a black long sleeve shirt with black pants with dark blue sneakers.

He is notably very arrogant, mostly due to his immense power relative to other Regulars. This often makes him overconfident, but he is quite intelligent and can quickly notice and exploit his opponent's weaknesses.

He has a stoic personality yet is annoyed by almost everyone.

He has an active rivalry with Novick.