Traits

Rionoeru has his own temporary and permanent dedicated traits, and most notable permanent trait that people around him knew, are his 'happy-go-lucky' attitude. He also have his own unique attitudes.

Temporary Dedicated Traits
Rionoeru has only one temporary dedicated traits; excessive fiery-tempered.

According to Zainol, Rionoeru's adoptive brother, in a personal interview with Nightkids Group, he have ever accidentally been hitted once by him (Rionoeru), instead of his archcompetitor (now an enemy), Nierzuan.

Zainol stated:

"However, he didn't do it intentionly, and I understand him because he's a great, nice person. A very-friendly person that I've ever met. And his fiery-tempered rarely occurred, which shows that his good attitude is always on his priority. And if he ever have it back, it usually lasts after at most-fully, a day [24 hours]."

Permanent Dedicated Traits
Rionoeru have many permanent traits; most of it are the usual ones - friendly, kind, forgiveful and many of the great-good attitudes that most of the people have. His most notable trait(s) are his 'happy-go-lucky' attitude, which refers to his excessive good-and-bad sense-of-humor and happiness; he'll laugh at several situations that makes him laugh.

Following that some studies said that being happy is the 'key' of the long-lasting life, he kept his 'happy-go-lucky' attitude until now.

Unique Traits
Rio's unique traits are his excessive timidness/shyness towards people, especially towards girls [sometimes, but rarely, refers to love confessions]. He also have this feelings to someone he met for the first time [towards both boys and girls].

While on D-Code Web Programming Course - 15th Camp, he have been discovered (and revealed) to have fall in love with a girl from another secondary school, by his 10 of his class/school mates via 'Ice-breaking program', and his excessive shyness towards her (which his friends realized) makes his friends to support him, to be in a relationship with the girl Rionoeru's in love with. It's then revealed that the girl goes by the name of Aisah, who is now an ex-student of Sekolah Menengah Kebangsaan Pekan II, Kota Belud, Malaysia, which has also been revealed as a musician.

Zainol has also revealed that Rionoeru is totally timid whenever he speak to his 'adoptive sister' (who is a cosplayer from Germany) in the Internet via 'chatting', as Rionoeru has special (love) feelings towards the cosplayer.