Terry Notary, playing Grommash Hellscream
Toby Kebbell, playing Durotan.
In Dawn of the Planet of the Apes (spoilers for that ahead), ape antagonist Koba kills Rocket's son, Ash. Rocket, is played by Terry Notary. Koba is played by Toby Kebbell.
In World of Warcraft: Warlords of Draenor (spoilers for that ahead), Orc antagonist Garrosh Hellscream is killed by Durotan's son, Thrall.
KOBA KILLS ROCKET'S SON
DUROTAN'S SON KILLS GARROSH'S SON
WTF is with this trend of Toby Kebbell's characters of the same blood (Durotan>Thrall) killing Terry Notary's characters of the same blood. (Grom>Garrosh)