Alastor had regressed earlier that day and been naughty so he was placed in his playpen for timeout. It had only been 3 minutes when he stomps a tiny hoof angrily and makes little fawn sounds of anger and distress, "I want out!" He squeals angrily trying to climb over said playpen, little tail wagging in anger as his deer ears go back. He starts biting the playpen, eyes watery as he starts to cry.
(in this au all demons are either a little or a caretaker or a mix of both. When regressed the demon in guestion turns to the age they regressed to as it is random though usually within a age bracket for example alastor is a little with a age bracket of 2-12. Regressions last anywhere from minutes to a week, any longer and something is wrong. They can fight the regression but there is a long list of side effects including: insomnia, extreme irritability, changes in appetite, dizziness, fatigue, and even getting sick. Edit: regression is also physical meaning actually de-aged for the duration of the regression when I say toddler I mean toddler though littles have vague memories of their adult selfs and when back to adult form the memories are fuzzy like they had just woken from sleep though the emotional bond stays the same.)