|The only known photo|
of an actual gelatinous cube
(image by Mmarti)
Picture it: You're creeping up the corridor, moving cautiously and checking for secret panels, when the thief who's out front listening at doors and checking for traps suddenly starts screaming and ... melting! You can't see anything attacking him, but he's flailing weakly at something and unable to pull away while the flesh on his arm simply dissolves. The ranger looses an arrow that inexplicably stops in midair and begins dissolving, too. You have no idea what this is -- a spell, a force field of some unknown kind, a magical trap? All you know is that it's liquefying the thief and slowly closing in on you. The thief is begging you not to cut and run, but ... what in Hell is happening?
Nowadays everyone knows it's just a giant Jell-O shot that can be killed easily once you know where it is. But if you hadn't read the Monster Manual, I maintain the g-cube could be pretty terrifying.
* I'm sort of proud that one of my creations, moon rats, made #8 on that list. And I don't care what he says, my moon rats could give that author nightmares and leave his character begging for death.