The Macro Grendels are a breed of Grendel designed for Creatures 1 by Slaterbait. Why are they called macro? Because they're so teeny! (Yes, despite the fact that 'macro' means big and they might be more accurately named 'Micro Grendels' - it's unknown whether this is a mistake or a joke on the author's part.) They occupy grendel breed slot 7.