My story isn't as interesting as some. Hylian_Monolith is short fro The Hylian Monolith, which is the username I chose when i first came to ZD. I was askedto choose a name to comment, and after several weeks of portraying a Chuchu I decided that I needed a human persona. In a ThinkGeek catalog, there was a Monolith action figure,and it fascinated me. So I named myself The Hylian Monolith, Hylian of course meaning "Of Hylia" or "Hylia's." Technically, my username is talking about the Triforce--y'know, Hylia's Monolith, the single humongous power of the goddess Hylia. I would not even consider this until after joining the forums, though.
Cut to the point: There weren't enough available slots for characters to fit in my full username, and so I go rid of the article and added an underscore for Nayru knows what reason.