Ohmaygot Ambatubas was a Mongolian Emperor who reigned from -322 to 2012, Ambatubas was known by many and regarded as a hero. Whenever he rode into battle he would shout: "Am Batukam!!!" who was the brother of Ambatubas who sadly died in battle while fighting alongside their father Ambasing.
An incorrect romanization of the japanese, "Good Morning!". Ohayou is the correct spelling (the u is silent) and is the informal version of Ohayou Gozaimasu.
Ohayo is used among friends and people who are of similar age.