When your fursona's name and anonymous online identity happens to be such a lengthy Animal Jam-esque name as December Winterwolf, you have to take a few tries to figure something out you want. My first Winterwolf-related username was DecemberWinter5 on Twitter (back when it was still Twitter): December + Winter(wolf) + (200)5. I later changed it to December_W_Wolf to make it more snazzy, and that's what I used for most socials for a few years (Pokemon Go didn't allow underscores, so I settled for DecWinterwolf, and Roblox only allowed one underscore, so I went for December_Winterwolf). I later decided that I wanted a username that worked well with all types of websites and services, so I took DecWinterwolf, tweaked it a bit, and now I use either DWinterwolf, D_Winterwolf (Roblox only IIRC), or dwinterwolf wherever I go! Well, sometimes I use PupCadets as well, as that was my last pre-December username and I think it's top-class, even if I'm not into PAW Patrol anymore (the Pup Cadets are an English branch of the PAW Patrol I created in the summer of 2019 as a young fledgeling, basically OC brain-vomit).