Cersei Lannister
Kill Count: 300+ First off, we aren’t even counting her childhood friend, Melara, that she most likely pushed into a well to drown. But we are definitely counting the lowball estimate of 300 people incinerated in the explosion of the Sept of Baelor. Casualties include: Kevan and Lancel Lannister, the High Sparrow, and Mace, Margaery, and Loras Tyrell.