Casimir Liber
Adventurer
Coming across tortles, they struck me as lamely vanilla...however, @Shroompunk Warlord 's idea of combining them with Kappas (loved reading about Kappa stories as a kid and glad they got a guernsey in some editions of D&D) as a race was inspired. So making them have some dish-shaped headspace with a liquid that preserves their strength and making that playable is really cool. And gives the race some depth and colour right from the get-go.