In the Old Testament, King Og of Bashan was a ruler of a region that encompassed parts of Syria and Jordan, a realm that held 60 fortified cities. This was a nation of the Amorites, a people who built the first Babylonian Empire. Yet unlike his compatriots, King Og was not of their blood, for he was of the Rephaim, a tribe of Giants that terrorized the Levant. Og himself was so large tha his bed, with an iron frame, was 13 and a half feet long and 6 feet wide, or 9 cubits by 4 (Deuternomony 3:11). This is quite considerable, since beds at the time were single couches (and it must be noted that the argument for making Og's bed a Sarcophagus, as adhered to by some, has been linguistically disproved: The Hebrew word used for bed, 'eres, is a poetic word for bed, in no way indicative of a sarcophagus). Due to the size of this bed, King Og may have been 11-15 feet high, making him of inhuman size, and perhaps inhuman period.
Og was greatly feared by Moses, yet Gd reassured him the victory, and sure enough the Israelites defeated King Og (Numbers 21:32-35, Deuteronomy 3). The King and his sons were slain at the battle, and the realm was devistated by the armies of the living God (ilbid).
The Battle is not described in detail in the Bible, though an extra-Biblical legend, which supersized both Og and Moses, told how he held a mountain in his hands to crush the army of Israel. Moses, seeing the threat, leaped and struck the giant on the ankle, causing the giant to fall, with the huge mountain on him. Though obviously exxagerating his size, Og may have indeed have tried to throw a boulder at Moses during the battle, and either Moses or another Israelite, perhaps Joshua, kept this from happening. For the sake of battles here, one of Og's weapons will be a huge stone.
Og was the subject of other stories outside of scripture, such as one that claimed that Og was a contemporary of Noah as well as Moses, living before, during and after the Great flood (he survived by either holding onto the ark, or due to the waters only raising up to his mighty ankles).