Back in spring of 2000, my top 3 favorite Pokemon were Ivysaur, Eevee, and Hitmonchan (now I lost interest in Eevee and Hitmonchan is my most favorite). Anyway, at the time I was coming up with an internet screen name, I just combined the 3 names. I designed the creature sometime later. Now just about every forum or art community I join, I always use Iveechan (I even used the name in science class one year when we had nicknames used for when grades were displayed). I like the name, it has an interesting ring to it when said out loud.
At the old PC and at Deviant art I use the name Hitmonarch, which was my made-up wild ancestor to the Hitmon. People always mistook me for a male under that name ^_~.