Argonian

More info here.

Anthro Tiger

More info here.

Fantasy Croc

More info here.

Dana

More info here.

Not free, cost is $15 but super appealing.

David

More info here.

This one is $15 and not free but looks really nice.

Grey Matter Gary

More info here. (their link is not always working; I contacted them and they're looking into it)

Rocket Girl

More info here.

Hekaton

More info here.