He's a liar. And not about cool sneaky game stuff, about dumb bullshit like being a teacher.
He's a baby. An actual, teething-and-then-crying-about-it pathetic infant.
He has no common sense, only an encyclopedic knowledge of BB that has gotten him pretty much nowhere, and in many cases actively worked against him.
He is a woefully bad player of the game due to his clear lack of self-esteem and In-The-Red levels of your standard Desire To Be Liked, which means he can't detach himself from game relationships and craves actual acceptance from the people he teams up with.
He is sad, pathetic, stupid, looks like an actual rodent, shuffles his fucking feet whenever and wherever he walks, and trots the bible and religion around as if they mean something to him.
Ronnie sucks shit. Period. End of story.