Clue #1: He's big, green, and lives in a swamp.
Clue #2: He's a cartoon ogre.
Clue #3: His name is Shrek.
Clue #4: He looks like this:
Ok, have you guessed who it is yet? Here comes the Wreck! (Choo choo!)
AAAAAUUUGGGHHH!!! Ahem.
Ok, so it's shiny, toothy, and has a homicidal glint in its dead, dead eyes.
On the other hand, now we know what would happen if the Incredible Hulk and Sloth from the Goonies ever had a love child. Right, Michelle Y.?