I joined in August 2012 (rip) and made a name by making this video for the first video contest we had:
http://www.youtube.com/watch?v=12uy16uv4EQ
From there I went full autism mode and had the most level 100's on the server (which was semi-impressive since we couldn't even do the Elite 4). I also became notorious for starting religious wars in Global Chat (when it was still usable) by posting inflammatory statements like "If god isn't real then who wrote the Bible? Checkmate atheists." I did this so much that eventually I got in trouble with the staff.
I gained a reputation on the forums at the same time by basically shitposting every stupid thread into oblivion, while posting bold opinions on various other subforums (see: Suggestions). Eventually I started making mock videos of various PokeMMO topics, and if I'm not mistaken, I currently have more likes than any other forum user here.
Oh, and I made Danii quit the game, lol.