Channel 4 publicity describes Kris as a feisty male. His feisty persona is prominent in the character's scenes, now and again a softer side to the character emerges. This softer side is often most played out on-screen in scenes involving the character's brother. McCarthy spoke about how is character put his guard up around characters other than his brother, Malachy. Malachy refers to Kris as Francis still and he also said: "For a long while, Kris was just this enigma that refused to be labelled. So to have his brother around - who knows exactly who he is and knows exactly why he is - just works. You see the real side of Kris when Malachy's around, as opposed to the 'performance' he puts on with others. He's like a Jekyll and Hyde character. When he's behind closed doors, he thinks he's 'safe'."