Madrox creates an identical physical living duplicate of himself upon any physical impact, possibly via Glossary:E#extradimensional, extradimensional mass acquisition similar to the process used by Ant-Man or the Hulk (Bruce Banner), Hulk. This process is spontaneous and cannot be prevented by Madrox. Although he can create multiple duplicates, and the duplicates themselves can also replicate, each is only able to create one duplicate at a time; he has been seen to produce around forty duplicates before no more would be created. The duplicates think, feel, and act independently, though usually guided by the original.