Taldeer
Taldeer is an Eldar farseer originally featuring in Dawn of War: Winter Assault expansion and the second expansion Dark Crusade, both times as the leader of the Eldar faction. She is most well known on /tg/ for being one of the protagonists of the awesome piece of writefaggotry known as Love Can Bloom, alongside the Vindicare assassin LIIVI.
In most drawfaggotry not actually directly related to the content of Love Can Bloom, Taldeer and LIIVI are assumed to have somehow escaped from their predicament in Love Can Bloom and are living happily together on Ulthwé or something. They optionally have a child known as Lofn. Taldeer is sometimes depicted as a daughter of Farseer Eldrad, with Macha being her sister. Fellow Farseer Caerys has a bit of a thing for her.
Recently, it was believed that Macha shot and murdered Taldeer in her sleep for being an insufferable bitch. It is unknown whether the story is false, or whether Taldeer was raised as an animate corpse at the bidding of her father. Considering the story took place when Macha was fifteen and doesn't mention LIIVI, more than likely it took place only within Macha's own mind.
It was revealed in Dawn of War 2: Retribution that Taldeer was killed by the Blood Ravens (As told by Azariyah as he taunts Ronahn before the Exterminatus. Speculate amongst yourselves whether this was simply him taunting the poor Space Elf, or truth; it would contradict GW's obvious nods to LCB, but it wouldn't be the first time they've dicked around) And the playable Ranger hero Ronahn was her brother.
And so LCB proved to be canon.