K' has a very serious and arrogant personality but is very easy to enrage due to his more high-strung side, though he is starting to treat Whip as a big sister and Kula as a little sister. He often calls Maxima names - like "stupid", "idiot", etc. - but he actually trusts his partner's reliability. He is hardly polite and is always gruff, even to those close to him. Because K' usually expresses his concerns in a "tough guy" manner, K' would often let Maxima handle any social necessities for him.