Where's the Lore?

I finally reached mastery level 7 with Tahm Kench. I decided to read up more on his lore and found this sad little paragraph. So then I just reached mastery level 4 with LIssandra and decided to read up on HER lore and..... and WOW, that's some well written and cool Lore. Now I know Lissandra has been around for a while and Tahm Kench is relatively new, but the lack of lore for my favorite champ kind of gets me down. I mean, it says that his friend is Aatrox..... How does THAT happen..... and it mentions Tahm Kench by the name "Two Coats" . . . . what's the story behind that? Come on, Riot, Give me some juicy lore, please. :)