Tzen is a kobold druid! He grew a love for the nature of the surface world after leaving his underground home, but was mauled by a panther after a few days camping on the surface. He was rescued by a druid, but became deeply fascinated by panthers and other big cats after the moment. So he started to apprentice under that druid, as they were a member of the Circle of the Wildfolk, a druidic circle who live among beasts and learn wildshapes. Tzen has since become a full-fledged member of the wildfolk circle after learning his first and favorite wildshape - the shape of the panther that mauled him!

Tzen calls his kobold form, his daymode, and his panther form his nightmode. (Though he doesn't change forms depending on the time of day)

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I've been playing a game on Tabletop Sim called Soulless Vessel. You're not technically supposed to have a character in it, since you're supposed to be ghosts inhabiting the bodies of adventurers, but I couldn't help myself. I made a deck based around turning into a lynx and shredding things up, with spellcasting on the side for utility, and turned that idea into a entire kobold.