Genya was initially a foul-mouthed and ill-tempered individual; a "lone wolf" who refused any help from others and did not show any interest in being polite or well mannered Genya demonstrates his ISTP type in many ways throughout the series. His ability to analyze situations quickly and adapt to changing circumstances is a hallmark of ISTPs. He's also practical in his approach to combat and survival, using his skills to improvise on the spot He is also shy around girls becomes all red