User blog comment:Ace666/Most Annoying Bosses I've Faughten With A Reason!!!!!!!!!!/@comment-2068106-20100703053654

It is very easy to tell where Diablos is gonna burst up from, when not in rage mode, he will burst up from wherever you are when his tail goes under (or where ChaCha is depending on who it is targeting), and when in Rage mode it will continue to follow your movement until about a second or two before it comes up... just keep moving and you will rarely get hit...