6 What non-D&D monster do you think is as iconic as D&D ones like hook horrors or flumphs, and why do you think so?
Gotta go back to Star Frontiers for this one. And IMO it's the most iconic monster (not counting the Sathar as monsters) from the game.
This bad boy is genetically engineered to ruin your day. Literally. The Sathar twisted the genes of the common cat to create this monstrosity, and it has numerous ways to tear you limb from limb, chew you to pieces, crush you in its tentacles, and then deposit whatever's left in the kitty litter.
And since it's in the book, and anyone who plays through the Volturnus modules will likely face one armed only with a spear and a straw dummy to use as a distraction, players will fear this monster. It really fits its simple name.
I oughta do a conversion for Basic D&D and throw some in my megadungeon, now that I think of it...