While the nexu brought something new to Star Wars monsters, the acklay was just instantly memorable when it appeared in Attack of the Clones. A huge, snarling, crab-like thing, the acklay has six claws, sharp fangs, and a tough skin/outer shell. Its relentless pursuit of Obi-Wan Kenobi in the Geonosian arena makes it appear meaner, and of all the monsters in the prequels, it seems to have the most personality. (Acklay’s standoff with Obi-Wan — particularly when the Jedi wards off the creature with a spear.