I'm a huge fan of retainers, so always glad to see more of them! I must confess that at my table retainers in combat have almost exclusively been used as replacements for heroes missing a session, and these ones don't really work for that purpose... Although that's neither here nor there in terms of the jam.
I love the art. It's almost distractingly good! I like the archetypes the retainers cover and think the abilities are nice and flavorful. Others will have more useful feedback in terms of balance. The one thing I will note that I would have liked here is more features for leveling up the retainers. They have their higher level abilities, but presumably the Stamina and Characteristics also increase? Other than that, excellent entry, well done! :)