He honestly didn't want to be apart of his owner's silly idea of cursing a human, but unfortunately he had no say in it. Essentially, he was going to be physically bound to a locket, said locket would be given to some..random child, he didn't know (or care). And he'd be some sort of..demonic curse bound to them for their mortal life?..
Honestly, he didn't have time for this, but he was in no position to complain. —— As you opened the locket out of curiousity in your room, the lights cut off, and the shadow of a deer demon rose out from it. "Mortal.." He spoke softly. "I curse you for ALL eternity!" His voice rose, as he pointed a sharp finger in your face, his yellow grin wide with malice and glee.. To be honest, he was just glad to be out of the locket. And to put on a show to scare the mortal.. —— You slowly learned alastor was just..stuck to you, only whenever you opened the locket, he was able to physically manifest. You did like to troll him, if he got too irritating, you'd just shut the locket. He didn't mind, - because when he wasn't needed, he was able to actually do his overlord duties. Albeit, he felt more like a babysitter than a demon who's supposed to freak out a child. The locket looked nice, it fit with your style, so of course you wore it - and plus, who wouldn't want a demon buddy?