CarlManvers2019
Writers Blocked Douchebag

Tytos Lannister
Tytos Lannister was the Lord of Casterly Rock and the head of House Lannister during the reigns of kings Aegon V, Jaehaerys II, and Aerys II Targaryen. He is the grandfather of Cersei, Jaime and Tyrion by his eldest son, Tywin Lannister.
Tywin's dad's mind is replaced with that of Fat Tony from The Simpsons

Fat Tony
I don't get mad, I get stabby.Fat Tony's quote Fat Tony playing dumb when accused of a crime he committed involving a stolen truckWhat's a truck? I prefer the cat. He hates Mondays, we can all relate.Fat Tony, on picking Milhouse's three-ringed Garfield binder to stop the Calabresis from hitting...
By the time he's become Lord Paramount of The Westerlands
The "Supposedly Fat Lion" has become known for his strange mannerisms, way of speaking and accent
Also, the fact that he's done weird stuff like put a horse's head into a Lords' bed when they pissed him off somehow. Walder Frey woke up with his steeds' head in his bed.