These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Even more so, when you consider that Gwynplaine himself — a wholly good character, was the inspiration for the Joker — a wholly evil character who looks almost exactly like him.
Better Than Canon: The original movie. Unlike the novel wherein, you know, the one where the protagonist and the love interest die.
Funny Moments: In the 2012 film, young Gwynplaine comes out beside Ursus during one of his shows and starts imitating his crazy gestures, thus attracting a crowd of people, and it takes a minute for the latter to notice him.