I was just listening to that “Superman Song” by the Crash Test Dummies, where they say that “superman never made any money / saving the world from solomon grundy”. I didn’t know who Solomon Grundy so I looked his ass up. Apparently he’s some huge hulking Zombie:

“In the recent Starman series (which provided a revised Modern origin for the character) it was revealed that Cyrus Gold, a wealthy merchant, was slain and dumped into the swamps outside Gotham City in 1894, where he emerged fifty years later as a swamp beast (just in time for the Golden Age). Following his resurrection, he wandered into a hobo camp, where he was named “Solomon Grundy” by the inhabitants because all he could remember was that he was “born on a Monday.” The hobos convinced Solomon Grundy to help in a robbery and that was the beginning of his second life.
It was also revealed that whenever Solomon Grundy dies he regenerates and then comes back to life with a different facet of Gold’s original personality at the forefront of his own (which is why he’s sometimes intelligent, sometimes mindless, sometimes good, and sometimes bad). I can’t help but wonder if he’ll die and come back a few times in the Justice League as well.”

Oh right, the reason they name him Solomon Grundy comes from this nursery rhyme:

Solomon Grundy,
Born on Monday,
Christened on Tuesday,
Married on Wednesday,
Took ill on Thursday,
Worse on Friday,
Died on Saturday,
Buried on Sunday:
This is the end
Of Solomon Grundy.

Here are some more links with pictures and info on Solomon Grundy: