Warcraft Ratings

lol half-orcs what's the other half?

Ogre, for some.
Rexxar for example is supposed to be half-Orc, half-Ogre i believe; although there is uncertainty on exactly what he is :-)
http://www.wowwiki.com/Rexxar

In the WC3 Frozen throne campaign it was said he was Half Ogre

What no Garona? Oh yeah, 'Troll', Garona is a half orc, half draenei, and rather important. And her son is quarter orc, quarter draenei, and half human, but still gets classified as half-orc coz he's green.

The green-skinned orcs are one of the most prolific races of Azeroth. Born on the world of Draenor, the orcs were brought to Azeroth through the dimensional gateway known as the Dark Portal and waged war on the humans while under the influence of the Burning Legion.

The orcs once cultivated a noble, shamanistic society on Draenor. Tragically, the proud orc clans were corrupted by the Burning Legion and used as pawns in the Legion's invasion of Azeroth. The orcs managed to rebel, however, and they were ultimately able to help turn the tide against their demon masters. Led by the young Warchief Thrall, the orcs have reclaimed their strength and honor. The orcs moved from the Eastern Kingdoms to Kalimdor, and there they founded the nation of Durotar.

Now, the orcs stand ready to fight not for the sake of conquest, but for their very right of survival in their adopted world.