Captain Levi sings your favorites!

So, ever wonder what would happen if characters from your favorite anime series all decided to go out to karaoke?

I've known about this line of vids for a while, but I still find them pretty funny. Someone out there (who goes by the name yasu) decided to take a bunch of anime series and find out what songs the voice actors sang in the past... though he sometimes goes out of his way to find less than flattering songs for some characters.

Spoiler warning: some of the images he uses in the vids are spoilers.

What would happen if Attack on Titan characters went to karaoke (1 of 6)
Hint: Armin gets in touch with his feminine side.

What would happen if Idolmaster characters went to karaoke
Ever heard a frog puppet sing the Saint Seiya theme song?

What would happen if OreImo characters went to karaoke (1 of 2)
Ayase makes my nose bleed, that's what happens.

What would happen if Sword Art Online characters went to karaoke (1 of 3)
Kayaba: IT'S THE CIRCLE OF LIIIIIIIIIIFFFFEEEE!!!!

He put all the ones he's done in a public playlist so everyone can listen in. Don't think it's that big a deal to link it, so here.

What would happen if (insert series) characters went to karaoke series
NicoNico Playlist, by yasu: http://www.nicovideo.jp/mylist/34252421