I wouldn't say I write novels, like at all, but past RP experiences do sometimes stick with me. There's this one extremely unremarkable Yu-Gi-Oh! RP I've always kept in the back of my mind because something just... clicked with the cast of it. The cast itself wasn't very good, hell, I carry about 3 of their characters with me and I've forgotten all the rest, but in my mind those 3 had an interesting dynamic that could've made for a good story. It's a concept I've slowly tinkered at over time, and maybe someday I'll write a fanfic based on the ideas carried over from them.

Actual RP itself was hot garbage, though.

Otherwise I don't particularly inspire myself off anything that happened in the past, or off of my peers, but I do tend to remember most any character I've ever made and sometimes draw from my own well of ideas. I did straight-up parody someone else's character at some point, but that's about as far as it ever got. I am known to sometimes just... adopt dropped characters, though.