A villain is given sympathetic qualities that he or she didn't have originally to make their character more complex than in the original work.
Subverted: While it looks like Bob is the villain, it later turns out that he isn't, and he takes on his original role in the story...
Double Subverted: ... until it turns out that Bob really is the villain.
Parodied: Bob is a failedPlucky Comic Relief character who decides to get revenge on his fellow cast members because he didn't get any respect as a hero.
Zig-Zagged: Bob's actions are much more heinous than his original counterpart's, but he also has a more sympathetic backstory to explain his behavior where he didn't before.
Averted: Bob's personality and role in the story are the same in the movie as they are in the original.
Enforced: The original source had no clear villain, or the villains are more comical than truly evil. The adaptation is trying to be Darker and Edgier, making it more clear who the villain is by making the antagonistic character really evil instead of misguided, sympathetic, or likable.
Lampshaded: "Why are you evil, Bob? I thought you were supposed to be nicer than this!"
Conversed: "Why did they make Bob a bad guy? Wasn't he an OK guy in the original?"
Deconstructed: Bob, while he sticks to his original, more benevolent personality at first, becomes steadily more villainous due to differences in the plot that exploit his darker side. However, he never does anything to make him an outright villain.
Reconstructed: Bob is a clear villain from the start, instead of simply being neutral or ambiguous, even though the plot is otherwise the same.