I'm heading out of town for a few days so here are my entries for the next four days...
Day 15: Here's a gnome illusionist/thief for the Swords & Wizardry RPG. The character sheet is a creation of my own based on the classic D&D character sheet.
Gunnar Oakborn is a gnome illusionist/thief from the town of Verbobonc in the World of Greyhawk. He and his family belong to a travelling troupe who use their illusionist abilities to entertain (while others in the troupe practice their thievery skills). The knack for illusionist magic seems to skip a generation. He was taught illusionist magic by his venerable grandfather and his thieving skills by his father.

PDF Link:
https://paratime.ca/pdfs/31day/Gunnar.pdf
2026 Character Creation Page:
2026 Character Creation Challenge | Paratime Design
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Day 16: Here's another random-based X-Plorers character.
Godec is a Karunk (a modified human adapted to living on worlds with high gravity fields). He has been exiled from his clan of warriors because he chose to walk the path of a scientist. His clan's loss is the crew of the Moon Maiden's gain. He is pompous, somewhat ambitious, and an excellent scientist.

PDF Link:
https://paratime.ca/pdfs/31day/Godec.pdf
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Day 17: Here's another NPC villain from my current Villains & Vigilantes campaign.
The Shadow Regency is a secret cult that worships the Grand Shadow that exists in the Shadow Dimension. Their goal is to open a portal to the Shadow Dimension to allow the Grand Shadow to cross over and take over their universe.

PDF Link:
https://paratime.ca/pdfs/31day/ShadowRegency.pdf
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Day 18: Here's another TMNT character for the Mutants Down Under setting.
Rikky Ranger is a mutant dingo who is from a settlement at Sydney Bay [on Earth-011]. He comes from a long line of self-confessed car nuts. His dad, Rocket, taught Rikky all he knew about cars – driving and fixing them. Rikky built "Jannali" from parts scavenged from all over.

PDF Link:
https://paratime.ca/pdfs/31day/RikkyRanger.pdf
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Day 19: Here's a Tri-Stat Silver Age Sentinels RPG character.
Wolf-Spider is a metahuman based in Thunder Bay, Ontario. Gregg Baxter was a geologist who was studying a crashed meteorite when an alien ooze emerged and infected him. The alien substance was a warrior-defender-spirit from a long forgotten cosmic war. The alien (calls itself The Forgotten) was absorbed through Gregg's skin into his body. It changed Gregg's body and mind into the metahuman that he is today - Wolf-Spider. He now has an alien consciousness living in his mind; at times, this can be more confusing than helpful.

PDF Link:
https://paratime.ca/pdfs/31day/WolfSpider.pdf
Cheers,
Tim