Oolong is a shape shifting pig of awesome power. Most don’t know this because he didn’t do much in dbz. Mostly it was in the original Dragon Ball series. His power is so great that not even Goku could take him down. Oolong has achieved many forms through the series and I’ll make sure and show most of them. It will help you understand the kind of power that Oolong is capable of. No one in all of media can take down Oolong. It’s impossible to beat someone of Oolong’s capabilities.
His Main Forms
His Record
L Bass
DReager1.com 
Are you trolling? Oolong never beat Goku. His transformations only changed his appearance but did noting for his strength.
Well, in the profiles I try to make the character sound tougher than he is 😀 I don’t actually think he can beat Goku