Who do you think is the most dangerous character in G.O.Ts and why?
Petr Baelish is mine.
Why is that?
He really only holds fealty to himself.
It's pretty clear that Little Finger is very ambitious and will go after anyone to further himself and his House. His actions have lead to the deaths of Jon Arryn, Ned Stark, near death of Brandon; Robb; Catelyn and Joffrey.
He's responsible for House Stark warring against House Lannister; the War of Five Kings and for in-fighting within House Lannister. His outward Fealty is to House Lannister, however if he's ever outed it will be House Tyrell. When he is truly revealed to everyone else of his intentions he will be back to turning to himself only for assistance.
What is your choice?
Game of Thrones: Threads at the TV Critic