10 Worst Characters In Game Of Thrones 

10. Kevan Lannister

Kevan Lannister is ostensibly a key supporting player around King's Landing, featuring prominently on brother Tywin's war council, and later the Small Council, even being named Hand of the King.

But despite his apparently glowing achievements, Kevan doesn't really do anything, or have any character at all. He's just kind of there, and more often than not treated as a bit of a bumbling idiot (so is Mace Tyrell, but at least that's the way he's supposed to be and it's played for real laughs).

He's not particularly interesting, and doesn't get the chance to really operate politically, even after Tywin's death, but merely stands around as a somewhat familiar face.

In the books he is similarly in the shadow of Tywin, but mostly because he recognises his brother's tactical genius and agrees with his decisions. He's a much shrewder operator, has a bigger part to play in things (in particular in working against Cersei), and is killed off (I won't say by whom here) because he threatens to bring order to King's Landing.