My revised top 5 now I've thought about it is:
1) Cronios
2) Alen
3) RUS
4) Klin
5) Lion
The shit Alen pulled on Badass was too far, but it really was an insane act of sheer trolling. Cronios wins for somehow trolling in such a way that some...no actually - many people still think he's completely serious. Klin is the only one who isn't a pure troll, but I like the understated subtlety in how he goes about it. A couple of years ago Lion would have been on top, he's only even in the top 5 because of past glories. Past it.
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So like, Uruguay basically just stopped being a part of Brazil one day. Is your country that lame?