When Swain's VGU came, I was looking forward to know why he betrayed Urgot, to sort of see his side of the story. I was disappointed however when his betrayal of Urgot wasn't even mentioned. Or have I missed something here? I read through the updated bios and stories, but no cigar.
If any rioter could tell me, I'd apreciate it
pretty sure the "lore department" consists of multiple small, disjointed teams of tumblr fan fic writers
Urgot was a great executioner under the reign of Darkwill. Swain planified to seize the throne, so he had to get rid of everything that could prevent him from doing it. Urgot has been sent to Zaun into a trap. Swain was mostly hated by many in Noxus as he came back from Ionia alive, crippled and disgraced by the Noxian failure. So, Swain didn't really betrayed him, he just took some precautions... :p In Swain's story, if you take some hindsight on the situation, Urgot has no political purpose, he's just a threat like any other element under Darkwill's reign. Then, speaking about Urgot wasn't necessary in the events.
I actually have a personal theory that Swain didn't sell Urgot out at all.
Swain has NO mention of Urgot in his special interactions, which is strange.
BUT
What is Urgot's interaction with Swain?
"I will not kneel to a deceiver."
I mean, this can mainly be because he actually was deceived by Swain himself.
But 
is THE deceiver.
I think it may just be a coincidence. But, a really clever way to hide a potential twist.
He didn't betray him directly,Urgot is calling him Traitor for Swain killing the former Noxian Emperor and getting the throne for himself.(later on that changes )
Nope, it's clearly stated that Swain sold him out.
I guess a simple explanation was that Swain saw him as a threat to his rise to power, but I would've loved for Riot to delve a bit deeper into that and elaborate on it
