This .zip file contains all the .STL files you'll need to 3D print your own fully articulated Barbie-compatible battle tardigrade, as well as various Barbie-compatible armor and weapons.
The furkini and boots are designed to fit a Made To Movie Barbie, but will probably fit most other dolls of similar dimensions.
furkini top and bottom
Armor and Weapons:
helmet (3 pieces)
shield (2 pieces)
triple-headed flail (5 models, 10 pieces when printed)
Mongol-style recurve bow
tardigrade saddle (6 models, 7 when printed)
nobori (2 pieces)
nobori decal (.svg file)
Brenda the tardigrade (13 models, 61 pieces)
All of these pieces should print without support. The artificers here at Zheng Labs recommend printing the saddle pad, yoga mat, sheath, and furkini with flexible filament. The snake armband can be printed in regular ol' thermoplastic and then heat-deformed with the help of a hair dryer.