Arthur - flat white. I’ll give Pendragon some credit and assume he wants a perfect blend of espresso + milk. Not too strong, but still gives him some energy.
Lancelot - caramel apple spice. I don’t see him as a big coffee person, so he gets something sweet and seasonal.
Mordred - strawberry creme frapp. Baby boy, the ultimate child’s drink lmao, but I don’t think he’d drink coffee so he sticks with this.
Leon - black coffee. I feel like he’d be a bit boring and only drink coffee when he’s a bit tired and wouldn’t get nothing extravagant.
Gwen - iced passion tango lemonade. I feel like Gwen likes the teas more than the actual coffee, and gets a variety of them, but this one would be her fave.
Percival - peppermint mocha. I feel like Percy would want some espresso to wake him up, but also something that’s not too boring.
Gwaine - mocha cookie crumble. I could see Gwaine having a sweet tooth and wanting a lot of sweet with his coffee.
Merlin - pink drink (strawberry açaí with coconut milk). It’s a fun drink and tastes good, so I think he’d enjoy it.