Autumn Helix is the model vendor located in the Brick Annex in Nimbus Station. She wears Rank 2 Summoner gear, implying that she is a member of Assembly. Autumn Helix is unique among Model Vendors for her rotating inventory, which is frequently advertised on the News Screen and Loading Screens. In addition to her fixed inventory, which includes Blue Imaginite Crystals as well as modules for the Nimbus Rocket, Autumn Helix sells an exclusive series of models for a limited amount of time. From November 2010 to May 2011, Autumn Helix sold models of the Airport set. After May 2011, Autumn Helix began offering models of the Zoo and Safari sets.