Mesmer is a mischievous demon who likes flitting between realms and exploring. For him, pestering mortals is akin to grocery shopping; an unremarkable and annoying task that is necessary to meet his needs. His preference is to latch onto a mortal's pre-existing worries and manipulate them into taking actions that will produce high levels of emotional vital energy, upon which he will feed. He rarely engages physically with mortals and will not stay with the same victim for long... with rare exceptions.
Despite his lackadaisical attitude, he actually has a lot of empathy for mortals for a demon. He feels a little guilt mixed in with the demon-typical satisfaction when mortals are harmed, and occasionally finds enjoyment in conversations with his victims. He tries to push these feelings down, as it's unheard of for demons to connect on an intellectual level with mortals. Though he makes an effort to hide it, his friends have noticed how he feels, and they think it's pretty weird. One friend even accused him of smelling like a mortal the first time they met - a highly insulting comment!
Rapid-fire Mesmer facts: He snorts when he laughs (and he laughs a lot). He secretly eats mortal food sometimes and has a major sweet tooth. He doesn't know who his blood parents are, but this is the norm for demons of low ranking. He hasn't had his true naming dream yet, but believes he had it already and just forgot (he's forgetful and secretly insecure about it). He wholeheartedly believes in the legend of Lucifer and thinks that the mythical figure is super cool, but doesn't participate in any of the cults because he has commitment issues and organized faith creeps him out.