I doubt I will ever turn into a triple threat like Paul Jaquays (writer, artist, cartographer) but here are a few of mine. Mostly of NPCs I had over the years.
The feared tin-can orc Grandar. Virtually unhittable in GURPS 3rd edition and even if you do his plate armor soaked up most of the damage.
Just went kinda of crazy in sketching out the whole scene. An otherwise nondescript hafling fighter NPC.
A priest of Set and they don't use frickin maces. This guy was Lareth the Beautiful from the Village of Hommlet. I created a GURPS version of Hommlett in the early 90s.
Serina a necromancer from one of my adventure. She is an albino which is not much of disadvantage for her profession when you think about it.
Menstice the Rogue from a GURPS Campaign where all the players played 50 point characters. The normal start is 100 pts. 50 pts in GURPS is pretty close to playing a 0-level character in AD&D.