In Hunter × Hunter (2011, not sure about 1999), there is a character named Dwun (pictured below, red shirt) who appears in the Greed Island arc.

Today, I was exposed to this image of Yoshihiro Togashi, the Hunter × Hunter mangaka (from this much larger image):

I couldn't help but notice some remarkable similarities: The TV and games, the lack of a chair, his hairstyle, and clearly, the gargantuan mess of garbage.

Is this character, Dwun, based on Yoshihiro Togashi himself?