Requirements:
VRC SDK3
Change Log:

v1.1
Added documentation for shaders and mesh setup
Added "Generalized" version of shaders for easier use on other avatars or for making edits
v1.2
Fixed up Blondy's hair UVs for easier texture edits
v1.3
Added UV layout images
Modified face shader and texture layout to be easier to edit
v1.4
Added further mesh/shader documentation
Fixed a few small problems
Both avatars:
Custom shaders made by me, tailored to fit Popopoka's one-of-a-kind style
Unique rimlight effect, with AudioLink integration
Amplify Shader Editor graphs are included, along with custom ASE function and ASE template dependencies
Expressive facial animations
Comes with 20+ fun, expressive faces that you can make
Customizable control scheme for triggering facial animations
Easy to navigate expression menu, with custom icons
Preconfigured Physbones
FBT compatible (works best with height lock-in method)
Not perfect, but very usable!
"Good" performance rank
Quest versions included
"Medium" performance rank
Blinking, visemes, and 7 face expressions
Physbones
Drag and drop
Everything is ready to go, just import the package, open the scene and press upload!