"Let me tell you about my D&D character" may be the biggest nerd statement imaginable.
But, well, you asked. I've been playing pen and paper RPGs on and off since my last few years in high school, so I've acquired quite a stable of former characters. Most of them were short lived or not worth mentioning much because they weren't that interesting. These two are some of the more recent ones:
Klik'tik'tek was a character I played in the D&D pen and paper RPG, in a game that was set in the Dark Sun setting, a world where magic harms the environment and has subsequently turned most of it into barely-habitable desert, with a fauna that's ridiculously dangerous even by normal fantasy RPG standards. He was a thri-kreen, a species of mantis people who lived as hunter gatherers. His entire family had been wiped out, and so he moved to one of the city states in search for a new way to live; what he would was the concept of private property and capitalism, and so he would start seeing everything as a contract. He was also a Barbarian class, so in fights he would shift into a total berserk bloodlust and brutally impale people with an oversized hunting spear. You could think of this guy as what would happen if Conan the Barbarian was an insectoid spear-chucker and had extensively read Adam Smith and Ayn Rand.
Moonie (short for Moonchild Starlove Spheresong) is the most recent character I've been playing. She was from the Starfinder game, a space fantasy setting where fantasy species live in a magical solar system, using a rules system that's kind of off-brand D&D. Moonie was a Mystic, which is kind of a space priest who can do magic based on what cosmic force they are attached to, and she was a missionary to the Song of the Universe, a literal song she had been hearing/feeling growing up in a colony of space hippies. The party in that campaign served as agents for the setting's equivalent of the UN. I'd originally envisioned Moonie as a pacifist, so during combat she would mostly heal and buff people, summon monsters to aid her party, and only start shooting at people in self defense if I could help it.