The large clawed, cut enemy from Half-Life, imported into blender and given some extra visual flair.

Suprisingly easy to port HL content to blender, plenty of tools and addons to get content from older proprietary types to openly usable formats.

I'm hoping FA eventually adds some sort of video support, GIFs are so bad for this use case.
Edit: Well, video support confirmed, back-catalogue is ready, future animations will benefit, so happy.