i personally headcanon mark with DID, this mainly stemmed from that one "all abilities are stemmed from trauma" theory which got me thinking of tom and h ck as his alters, which would mean they are formed as a way to cope with trauma. (and since most bsd characters are based off their respective books, i am slapping on whatever tom and huck went thru on him )
this basically makes his ability a sorta extension to this by making tom and huck materialize into thin air.
please correct me if i do end up getting things wrong eek!!!









