I tend to think I do pretty well having a name from the late 90s but then some of you are like, "Well, it was the '80s," and I am like, "Welp."
Anyway - back in the days of TSR Chat I had a username that was often abbreviated to KoD. At some point I decided to just make a "nameified" version of that, and Kaodi was what I came up with. At this point I am extremely fuzzy on when the transition was. Obviously when Eric Noah's site came around I signed up as Kaodi. But I forget whether I used the previous name right up until the end of WotC Chat, or whether I had transitioned when it became WotC Chat, or sometime during its liftetime.
As for the picture a year or two before COVID my FLGS had its 20th or 25th anniversary (I was just back there for the first time in seven years two weeks ago) and the owner had a party and there was a woman there doing face painting. I was a bit reticent about getting my face painted as a 30-something dude and at this particular event but I asked her if she could paint something on the back of my hand instead and happily she was obliging. Among other things I thought it would be a nice gesture on my part to immortalize it as my avatar.