Ryusei Shido is known for being very tough, strong, and fierce. Ryusei is very possessive, wanting to get whatever he wants. Ryusei is also very strong, aiming to win Blue Lock to become the best egoist striker. He also displays yandere-like tendencies, shown to always care for his loved ones whenever he has the chance, and he's always thinking that he was made to win. Ryusei is very eccentric.