I was about to post the ones I remembered. Then I decided I had nothing better to do so I went and checked all levels.

Then it turned out that I had remembered all the ones.

Diamondus level 2 (LEVEL1.000): "tim is a dork"
Sluggion level 1 (LEVEL0.013): "EPIC" and "FU KKEN" (double entendre?)
Raneforus level 1 (LEVEL0.033): "SUCK MY (-)"
Deserto level 1 (LEVEL0.037): "CLIFF IS CO/EAT ME!/EPIC RULES"
Muckamok Guardian (LEVEL0.039): "LOSER" (repeatedly)
Lagunicus Guardian (LEVEL0.041): "(-) OFF LAMERZ" (historic note: http://www.jazz2online.com/jcf/showt...886#post169886)

Could have sworn there are more, though..