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He's a little insane, but he's got great vocals. He's also the drummer.
And this is the whole band:
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Flux, who does the guitar, sampling, mixing, and producing, is on the left. Then Dero the insane frontman and drummer. Last is Crap (yes, his actual stagename), who plays the bass guitar and keyboards.
The first song I heard of theirs was Augen Auf, which means "eyes open." I adore this song and the video is kinda disturbing, which I think adds to its charm.
My favorite song of theirs (from what I've heard so far) is Brennende Liebe, which means "burning love." It's a love song (kinda) and the video is dark and theatrical. The female voice is a guest vocalist and their fans think this is one of the best vocal collaborations they've done.
I also like Traumst Du, "do you dream."
And Dero sounds just as sexy in English: