"Nompy-the-Land-Shark" has got to go. It feels too weird to have all my work signed "LR." only for the illustrator credited under the image to be something totally different. It's so long and has multiple hypens in it. And the only other website I use this name is Reddit, where it's probably even more unfit!
But, I don't think FurAffinity lets you change these. There are like seven different settings pages that I had to look through, and I couldn't find an option to change it, even though I thought I remembered seeing it before...