Alex has the unique ability to create Weapons with his Kekki Genkai. Alex is a Symbiote. ((Like Venom from spiderman)). Alex's DNA is infused with the Symbiote. All the weapons Alex creates, are armed with the Symbiote. Thus creating an Infection in the opponent. If left untreated, the Infection can and will evolve and transform the Victim into a Symbiote. But for now, Alex is the only Symbiote.