Who knew System of a Down were one of the most evil bands in all of metal? That's obviously the case after witnessing YouTuber Paschalis Theotokis take the 66 songs from the Armenian-American outfit's studio LPs and mash them up in a six-minute medley. Put it together and you have 666 - the number of the Beast!

In the video above, Theotokis patches together bits of each song - in their original running order no less - making for quite the amazing bit of spectacle. There's some hilarity blended in as well, with SOAD frontman Serj Tankian and guitarist Daron Malakian represented in a perfect caricature of one another - with the latter even rocking a Guitar Hero six string.

This isn't the first time Theotokis has put himself up to the challenge of performing a medley of a band's entire studio output, as he's previously given a similar treatment to to the likes of Machine Head, Slipknot, Metallica and Lamb of God. To see more of his clever material, head over to his YouTube page and make sure to subscribe to the channel!

As for the real System of a Down, the band recently announced their first run of shows on U.S. soil since 2015 with five dates scheduled for October. When it comes to new material from the group though, the wait may be a bit longer. A few months ago, Tankian said the band has new material but cannot agree on how to move forward with it. “We have [attempted to make an album]. We’ve discussed it and we’ve played each other songs, but we still haven’t come eye to eye on how things should be done for us to be able to move forward with it,” said the vocalist.

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