We've had Inigo Meowtonya for over a year. He is 4/5 years old and painfully shy, as he was a former feral cat. He has Entropion (eyelashes flipped under, rubbing the eyeball) and it's taken 3 surgeries over several months to fix the issue - during which time he transformed into a housecat!
He loves his foster family, but totally disappears with visitors in the home and shuts down when "trapped" in a room to meet potential adopters. He loves other cats but is terrified of dogs and kids. We feel obligated to disclose that entropian might also be an issue for him in the future.
Once he's comfortable with someone (which takes a couple months in our experience), he's a total lapcat and basically their adorable shadow around the house. He makes adorable small chirrrup noises for attention.