Several years ago Sonja Blue had her own Wikipedia listing, which included an extremely detailed psychological study that must have been done by some nameless, very dedicated fan, because it sure as hell wasn't me. Then, about 4 years ago, her entry disappeared, eradicated by some self-appointed wiki-editor who decided Sonja somehow wasn't as culturally important as tertiary characters in obscure anime, and banished it to limbo. Either that, or he was a Joss Whedon fanboy, and took umbrage at the opening paragraph of said article (emphasis mine):
"Sonja Blue, previously known under the name Denise Thorne, is a
fictional character. She is a Vampire Slayer/Vampire heroine from a
self-titled series of novels written by Nancy A. Collins. Sonja Blue is
considered to be the archetype of the tough, vampire female in leather
within supernatural-themed literature. She could also be considered a
direct forerunner of Buffy Anne Summers (a young woman with the power of
a demon, who stalks and kills supernatural beings, particularly
vampires), and the world she inhabits bears many direct similarities to
the Buffyverse, full of demons blending into human society, and taking
on many human attributes in the process. The specific type of vampirism
represented in the Sonja Blue novels is extremely similar to that
depicted in the Buffyverse, in terms of both propagation and effect.
The Buffyverse character Faith seems very reminiscent of Sonja at times."
But on the internet, just like vampire fiction, dead is not forever. I have recently stumbled over the exact same entry enshrined on Wikibin.org, joining other entries discarded from Wikipedia.org such as Game 6 of the 2011 World Series, B-Goth and Steamfunk, and Lynkos.