Shall packhorses And hollow pamper’d jades of Asia, Which cannot go but thirty mile a-day, Compare with Caesars, and with Cannibals, And Trojan Greeks? nay, rather damn them with King Cerberus; and let the welkin roar.
There are no more uses of "Cerberus" in the play.
Show samples from other sources
In the Harry Potter series, there is a Cerberus-like three-headed dog.
I thought I was dead and Cerberus had found me at the gates of the Underworld.