Louise is a free high res facial rig for Maya, Unreal and Unity with a complete set of 236 blendshapes
AnimProps is a website where 2D and 3D artists can create an account for free to share, sell or purchase artwork. A big resource for animation rigs.
BOTW Link Rig is a free Maya rig based on the Breath Of The Wild version of Link (similar to the previously posted Zelda Rig). Made by Christoph Schoch.
BOTW Zelda Rig is a free Maya rig based on the Breath Of The Wild version of Zelda. Made by Christoph Schoch.
The Zelda Rig is a free Maya rig made by Christoph Schoch and is available on his Gumroad page