Expectation: They seem fun and friendly, maybe a bit hyper! Given their name and the first impression I get from their icon, I'd guess they're male. I'm also thinking they may be part of a small, close friend group... Idk I feel like they're not the super popular kind of people, without being a black sheep either. I feel like behind their happy-go-lucky exterior, they may deal with social anxiety or something similar? I don't expect their backstory to be super tragic; maybe a few real-life hardships and that's it. Unless they have part of a fantasy setting? I don't really think so but let's see
Reality: I was right, he's male! And whoopsies he's a fallen angel instead of a human, something I couldn't guess from the icon alone! Seems like he's way more self-confident and attention-seeking than I expected, even though he stays a positive person! Since you don't want to write down his backstory I won't be able to comment on it, but it looks like he indeed had to deal with real-life difficulties such as bullying!