Miscellaneous Myths: Tantalus!

I have an OT question - from the H.P Lovecraft video, when Red's picture of various Great Old Ones is shown during the "Call of Cthulhu" summary, does anyone know what the red tentacled being second from the left is?

"...and subjecting the ancient world to Agamemnon." Lol

Did'ya really just use hungry like a wolf for Tantalos and NOT King Lycaon!!?? I mean they both tried to feed the Gods their kids, but whaddaya gonna sing when you get to THAT myth? Still love. You and Blue can do no wrong. Which probably means You are NOT Gods.