Does TTGL have a defense against massive mind/soulfuckery?
One account of it being a galaxy sized mech with the firepower to destroy galaxies.
Seriously, Cthulhu's immortality is not that impressive and he's being overestimated here. He was a planetary threat at best. He also doesn't have any feats against vaporization/atomization.
TTGL can totally reduce him to that state.
This episode had everything: comedy, drugs, mayhem, flashbacks, emotion—what more do you need?