Spiders are mainly red in color while Gold Spiders are gold in color.
Spiders mainly crawl down from the ceiling and onto the ground. When they spot Luigi, they let out a hiss before going after him and biting him. Like Bats, Spiders mainly attack in groups and it is best to deal with them with the Strobulb. The Spiders seem to obey over the Spider Queen even when she was possessed by a ghost.