Kaleb has a very unique personality, starting with his little quirk that everyone notices right away — he's a massive germaphobe. It's ironic, considering he's an Infected that can't get sick, no matter what. The truth is that Kaleb was very sick and near death when he was still a human, and if it had not been for Cypher's medical trials of DraC-2, he would have ended his life at a young age. The trauma that came from his near-death has left the man scarred, and he has an extreme phobia of germs. Kaleb wears heavy coats and thick leather gloves most of the time, refusing to touch anything unless he's certain it's clean — and, by proxy, loathing having anyone touch him. He must feed on another living being in order to survive, but the thought of having to sink his fangs into some dirty beast's body in order to drink from them is absolutely revolting. He will not drink blood unless it's in a glass, and even then, he prefers to bleed his prey himself to ensure it's clean.

Past his irrational hatred of germs, Kaleb's personality has been molded and shaped over the decades he's been alive as an Infected. Whoever he had been as a human — some poor, meek little creature that had nearly died from an infection — was no more. Now, he is a cunning and quick-witted creature, a dominant predator that sits at the top of the food chain. He's gained confidence over the years of being a creature of habit, and he does not fear confrontation with anyone, no matter their ability to kill. His newly-found confidence and sharp wit makes him the perfect business man that has a hand in the underworld. Secrecy is paramount in his position, and he enjoys gambling with loose associations to the Jabberwockies and conflict with the Military. However, it's his twin brother, Kaede, that truly keeps him strong. Kaede is the only person that Kaleb has ever allowed close to him, and he's content to remain in their bubble of two.

In general he's a very calm and level-headed person, not the type to lash out in anger or react based on emotions. He's ruthless in what he does — little to no compassion for the humans that they buy and sell off like a commodity — but there's very little emotion when he does it. It can be frightening to some, to see just how apathetic he is about the dark dealings he gets his hands (metaphorically) dirty with. His natural nature of being someone that thinks before acting — of remaining in a more passive mood, no matter what — makes him the perfect yang to Kaede's yin. It's no secret that his twin brother can often get a little ahead of himself when it comes to dealing with issues, and Kaleb is always there to remind him when it's time to reel things back in. When it's time to cool his head again. In return, Kaede truly empowers Kaleb and makes him feel safe.

The Infected is cunning and quick-witted, and while he does not take over any of the more public business transactions of the club he owns with Kaede, he is content to remain in the shadows, doing what dirty work needs to be done. He is by no means stupid, and any that think they can fool him are quick to learn the consequences of their mistakes. Despite his obvious flaw of fearing germs, Kaleb is an Infected not many think to cross, which makes him and his brother a deadly duo. Kaleb trusts his twin like he trusts no one else, and his loyalty can be described as 'unto death do we part'. Some may say their loyalty to one another extends into some twisted form of love — although it would be true of course that the twins have a familial love towards one another — but they merely see it as being reflections of one another. Two sides of the same coin.