The eleventh incarnation of Hanna-Barbera’s Scooby-Doo cartoon was called Scooby-Doo! Mystery Incorporated! which ran on the Cartoon Network from 2010 until earlier this month.
According to Wikipedia, Scooby-Doo! Mystery Incorporated! was ‘dark,’ paying homage to the likes of A Nightmare on Elm Street, the Saw franchise, David Lynch’s Twin Peaks, and the eldritch horror of H.P. Lovecraft.
In particular, in the second season, the central story arc of the show evolves to heavily feature the use of Babylonian mythology, exploring the Anunnaki, the Babylonian and modern pseudo-scientific concepts of Nibiru, and the writings of Zecharia Sitchin.
Fun fact: Actor Michael J. Anderson (little dancing man) lent his voice for these Scooby-licious episodes.
Below, Scooy-Doo and friends get all Peaked-out: