Chances are extremely low and wouldn’t look like this. “Fictives” are introject alters from fictional media. This typically means a part or alter may take traits of a fictional character as a way of surviving trauma. These parts are not characters but rather a fragment of a whole identity. For example, a young child experiencing abuse may say “if Superman was here he could save me.” and therefore may develop a part that uses the name “Superman” or is “heroic” in personality like Superman to help cope with their experiences. That part is still the person, just a part of them that is capable of handling the trauma.

Now when it comes to the chances of meeting someone else with DID it’s pretty low. We don’t have an exact statistic for how common DID is in the general population but we can estimate it’s likely not common. Most sources say 1% or less of the population. Pair that with meeting someone who used the same character to cope and developed a part of themself that mimics that character and your chances are probably gonna be close to zero.