Greg Cox wrote:

Nog doesn't belong on that list. He was a perfectly believable teenager, much more so than Wesley, who had a great character arc, from goofy kid hanging out on the Promenade to the first Ferengi in Starfleet and wounded war veteran . . .
(Plus, I always liked writing Jake and Nog.)
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I meant Rom, the dorky adult Ferengi. Technically, though, I can include anyone, regardless of whether they're historically known as 'unlikeable characters.'