3) The Governor
Whatever incarnation of the series you’re talking about, the Governor is always a brutal enemy who’s responsible for taking out a great number of the cast. The difference between them, then, is mostly in their appearance.
On the page, the Governor looks nothing like David Morrisey. As opposed to the actor’s Caucasian good looks and clean cut hair – which fits his initial appearance of respectability – the comics version has a lank long mop, a handlebar moustache and is possibly Hispanic. Curiously, his eyepatch is on the opposite eye. He also lacks his right arm, and, erm, his genitalia.
[zergpaid]Yup, in the comics Michonne goes a bit further than just blinding the Governor in one eye. In the comics, she tortures him by scooping out his eye with a spoon, chopping off his arm and castrating him. Presumably, this was dropped from the show as it was just too visceral for even The Walking Dead to portray on screen.
Their personalities are also subtly, but distinctly, different. The comics version is more of an out-and-out wacko while Morrisey’s take on the character suffers from a quieter – but no less deadly – form of psychosis.