Duplicator

Duplicator is a SuperNaturals member who can make any number of copies of himself, although the copies cannot make copies. Each duplicate is fully autonomous, but they all are extensions of Duplicator's mind and he can control or communicate with the copies telepathically when necessary, to the point that he's really just one person with multiple bodies. This is nice because when you run into one of the copies, you don’t need to fill them in on whatever conversation you had with the last copy you interacted with. The original and all copies have slightly above-average intelligence, memory, etc. due to his vast parallel processing capabilities. We’re not sure how the creation of these copies works (but we think that every new copy created results in a proportionate decrease in the mass/energy of some black hole out there to satisfy thermodynamics). When a copy is no longer needed, he just goes back to base until he’s needed again, or finds a normal-ish life wherever he is. While experiences and skills are shared, allowing Duplicator to be fluent in many languages and have a working knowledge of just about every field of study, physical properties are specific to each body. Every new copy begins identical to the original, but any muscle growth, scars, tattoos, or genetic enhancements are limited to that copy only. When a copy does get “killed,” Duplicator feels that pain just like if he were to get an eleventh finger chopped off, and can spawn another one if necessary. He and others suspect that if his original body were to die, he would feel this the same way as losing a copy, except then he couldn’t make any new copies of himself anymore.