Ash presents himself as a cold and professional young man, usually focused on the mission and showing little emotion towards much else. This is especially reflected in his fighting stlye, often dispatching enemies with effeciency and not speaking unless necessary.
Despite that, he does possess a more compassionate side, often taking in stray animals and having either sent to shelters or caring for them alongside Rozé. He can also be somewhat shy, nervously hiding behind Tomoomi Oda when Youko Araki saw him in his underwear.