What was Lorkhan, by the way, an Anuic Daedroth? He's my favorite immortal being.
He was actually just a being. He wasn't a Daedra or a Aedra, just "an urge" at first. He was Padomay's (A.K.A. Sithis's) "son".
Personally, I think he's kinda rude.
"As he entered every aspect of Anuiel, Lorkhan would plant an idea that was almost wholly based on limitation. He outlined a plan to create a soul for the Aurbis, a place where the aspects of aspects might even be allowed to self-reflect. He gained many followers; even Auriel, when told he would become the king of the new world, agreed to help Lorkhan. So they created the Mundus, where their own aspects might live, and became the et'Ada.
"But this was a trick. As Lorkhan knew, this world contained more limitations than not and was therefore hardly a thing of Anu at all. Mundus was the House of Sithis. As their aspects began to die off, many of the et'Ada vanished completely. Some escaped, like Magnus, and that is why there are no limitations to magic. Others, like Y'ffre, transformed themselves into the Ehlnofey, the Earthbones, so that the whole world might not die. Some had to marry and make children just to last. Each generation was weaker than the last, and soon there were Aldmer. Darkness caved in. Lorkhan made armies out of the weakest souls and named them Men, and they brought Sithis into every quarter.
"Auriel pleaded with Anu to take them back, but he had already filled their places with something else. But his soul was gentler and granted Auriel his Bow and Shield, so that he might save the Aldmer from the hordes of Men. Some had already fallen, like the Chimer, who listened to tainted et'Ada, and others, like the Bosmer, had soiled Time's line by taking Mannish wives.
"Auriel could not save Altmora, the Elder Wood, and it was lost to Men. They were chased south and east to Old Ehlnofey, and Lorkhan was close behind. He shattered that land into many. Finally Trinimac, Auriel's greatest knight, knocked Lorkhan down in front of his army and reached in with more than hands to take his Heart. He was undone. The Men dragged Lorkhan's body away and swore blood vengeance on the heirs of Auriel for all time.
I mean, he basically started a huge war "for the lulz".