Jin is a very elegant and intelligent character, but he is very cold and hostile towards others. However, he can be very affectionate when it comes to Ragna. This caused the fanon to label him as a tsundere (a person who is initially cold and hostile towards another person (as well as sadistic), but beginning to show their warm side over time).

Arc System Works has recently released a Fan CD called "BlazBlue: Fan Disc Tsundere CD", with Jin as one of the two hosts.
Jin's seiyū, Tetsuya Kakihara, jokingly said in an interview, that Jin is actually not a tsundere, but a yandere. However, it could be stated that he can be a very rare archetype of both, with an added probability that he may also be a kūdere during his academy years without Yukianesa in his possession.