Bc everyone else is doing it, here's a masterlist of my aus... Subject to change over time of course
Wk bna au: (based off the anime BNA's universe) the wk crew are all beastmen, a separate species of human that can shift into anthropomorphic beast forms at will. Because beastmen are oppressed by humans in society, the crew decides to put on a show much like Kratt's Creatures showcasing facts about beastmen for humans to learn more about as the world grows more accepting of their kind :-)
Creature cult au: Chris and Martin's parents are the leaders of a cult focused on harming various endangered animals for ritual sacrifice, and the brothers must find a way to escape with the help of their friends Jimmy, Aviva, and Koki.
Swapped bros au: Chris is the older brother and Martin's the younger brother, only they're both the same height just with swapped personalities. That's literally the au LMAO
