what enemies do you think is the strongest?

Out of all the enemies you fought throughout the series, which one do you think is the strongest? I would say unverse but after aqua fought the heartless....I don't know.
Here is my list from strongest to weakest:
1.DreamEater
2.Nobodies
3.Heartless
4.Unverse
5.data bugs

 

The dream eaters in "The Pranksters Paradise" are very strong

 

1)Databugs! There are some heartless bugs that I've never killed so far :(! Like when you go to the keyhole and there is a RED DEFENDER that teleports and follows you when you change rooms >_<! Is the most powerfull non boss of the game in my opinion.
2)Nobodys are normaly stronger than Heartless.. but they got more reaction comands what can make their fight easier... If you consider that most Boss were Nobodies they do a nice power up to the class... In KH 1 there were a number of strong heartless that didn't apeared in KH 2, that could powend most Nobodies .. like Behamoth.
3)Unversed... they did get me strongly when I was playing with Ventus.. but than again we finish the game like in level 34... so no comparison to the top niche Heartless/nobodies.

Never played with Nightmares(dream eaters) so I am not sure of their streghts, they seem cute mostly, but looks are deciving in KH.