for example if i was in a double/tripple battle and say haxours activated it but my sawk had sturdy can my sawk be OHKOD?
Yes, it can affect your ally in a double battle. Mold Breaker affects whoever the move is targeted at. So if you have Haxorus with Mold Breaker and Gengar with Levitate on your team, if Haxorus uses Earthquake it will hit Gengar.