Though he appears rebellious, his personality is the exact opposite of his appearance.
He is described as stern and taking things overly serious.
His hardworking streak comes from the desire to make his father Fangle proud of him.

He is known to dislike people who do not work hard and slack off during training,
telling those people to "just get lost" because everyone in the pack should serious about being an contributive packmate.
He dislikes being looked down upon by people, an emotion triggered because of his childhood.

It has been shown he is a very strong-willed and determined individual,
as shown when he was ready to face larger foes to show just to how determined he was to make his father proud.

However, there is a different side to his personality as well.
He constantly gets into fights a certain packmate, usually because of their different views.
He can be quite immature, as revealed when he fights with said packmate for small reasons like food.
He can be calm and collected, but other times bad-tempered, argumentative, obnoxious, and violent.
He has a lot of arguments with his father, mostly due to fashion problems.

He cares deeply about working together as a team and incorporating teamwork and often lectures packates on this subject.
Ryuji appears to be able to memorize things easily and can not stand to be protected by girls.