Robinho, Nasri, Tevez, Balotelli. We've had so many characters play for this club just in the past decade. Pep is the only one who brought a culture change
I think most people on here are stuck with the 22 year old Ronaldo who was at United, rather than the player he is now.
His attitude seems to have changed a lot over the past 5 or so years, they talk about it a lot in Portugal where he's gone from being very unforgiving of his teammates for not being on his level to a real captain and mentor to the group. Dias and Bernardo absolutely worship him, whereas teammates from a decade ago like Nani couldn't stand him a lot of the time.
PS. Don't think it's fair on the others to include them with convicted gang rapist Robinho.