Both among humans and among ileosans, Eim's presence instills discomfort. Blunt, cold and standoffish, Eim makes enemies faster than he makes friends, which oftentimes stems from his own unwillingness to allow people to get close to him. He insists on maintaining control over his own situation at all times, giving grace to others only on his own terms. In a situation of fight or flight, Eim always chooses fight, therefore being willing to combatitively assert his dominance and exploit any perceived weakness at the mere suspicion of a possible threat which often includes any show of kindness. Eim is willing to act like a complete tyrant towards anyone who crosses him or asserts their authority over him, but he cares deeply for those he deems innocent of this and shows remorse when he understands he wronged someone who did not deserve it. Eim is more accepting to people he believes have gone through something he did as well, but he wont be the first to talk about it.

Due to his drastically poor mental condition, Eim comes off as unbalanced and lost in his own head. With a set of beliefs that seem irrational and inconsistent. A lot of his original personality, passions and behaviours have become distorted and eroded, leaving him a husk of his former self and disconnected from his personhood. Eim is stiff and unexpressive to an uncomfortable degree, since otherwise he moves very quickly. All of Eim's actions are driven by either distrust, insecurity, hatred, or empathy which are often tied to a high level of obsession and a warped perception of his own surroundings (Hallucinations). Eim has a distinct set of actions when it comes to engaging with his surroundings and other people, which includes: throwing pebbles at random people or places, sniffing people, walking around at night, talking to himself, staring and never breaking eye contact, speaking in a permanently hushed monotone voice. Some behaviours can be seen as self soothing, like regularly writing in his notebook.