The demand for BFDI face assets has exploded for three main reasons:

: Certain characters use non-standard assets, such as Yellow Face's more detailed, clip-art style features or Winner’s cloud-like non-binary form. How to Use Face Assets

The faces were raw and jittery. You can see the hand-drawn imperfections, which gave the original season its "Newgrounds" indie charm. The BFDIA/IDFB Shift:

The following images showcase typical asset packs used by animators to create expressive object characters: