This article describes a custom creation, custom theme, or other fan material, made by a Brickipedia contributor. It has never been, is not, and will not be officially released.
Sewer attack is a custom set by leo1433. It has 38 pieces and three minifigures: Spider-Man, the Custom:Lizard, and Mary Jane.
Spider-Man has lighter coloring than in The Green Goblin's Glider. All three mini figures and variations are exclusive to this custom set. The lizard has the same head as Bossk.