Gryphon knight (Patreon)

This month's poll pic ended up being a preliminary character design for different pic that I can't link here. 

If i were a better DM, I'd try to homebrew a fighter archetype for it. Something similar to the Cavalier, but obviously focused on riding/training Gryphons.  Kobald press has a decent one, but it seems a bit too powerful for most games.

Then again, any class that gets a gryphon to ride at lower levels is gonna be powerful.