Ants were creatures in Nimbus Park and early versions of Avant Gardens. While they could be smashed, they could not hurt players, as they were designed to teach players combat before they encountered Corrupted Robot Mowers. They spawned from ant hills scattered around the premises.
On December 19th, 2011, a LEGO UniverseGM named Shival hosted a party for players in Nexus Tower, spawning various objects, including a Maelstrom-fuming ant hill. Two more identical ant hills were spawned at Red Blocks and Avant Gardens on January 30, 2012. However, no ants were present at any of the events.