Many of Hasbro's vinyl toy Mighty Muggs come with accessories, which are additional add-ons to make a figure unique. Many of the accessories are separate from the figure and can be taken on and off, while some are permanently attached. For example within the Marvel line, Wave 3, the Doc Ock Mighty Mugg comes with tentacle arms attached to his back. While they cannot be removed, they are an accessory unique to the figure. On the other hand, an example of a figure with a non-permanent accessory is the Marvel Exclusive Spider-Man Mighty Mugg from the 2011 San Diego Comic-Con, which comes with a removable cloth mask. Each figure amongst the entire line is unique to itself, the only thing they share in common is the simple shape of the collectible.