JayneBrown
From Survival Of The Fittest
JayneBrown, despite what the name suggests, was actually a guy. He wasn't around for that long (joining on August 3rd 2005 and leaving on Oct 21st 2005) but he arguably came up with one of SOTF's most original characters in the form of Duncan Wright, the 18 year old with extensive knowledge of the act before even being in it, this ability being limited to only himself and Sydney Morvran.
A university student from South West UK, JayneBrown only came up with two characters- Jayne Brown (not surprisingly) and Duncan Wright.