11Mr. Toad (The Wind in the Willows)
It wouldn't be fair to call him "evil," but Mr. Toad isn't exactly a serial do-gooder or upstanding moral citizen, either. On the plus side: he's wealthy, adventurous, and a remnant of the old world. On the other hand, he's oblivious to the people around him, self-centred, and vain.
In other words, he and Miss Piggy may be too perfect a match. But she'd still get a hot air balloon ride out of the deal.