Wouldn't surprise me; he was all over MKD's story but they've not really alluded to him since except in Kai's MKA ending.
In Marvel vs DC, each universe (Marvel's + DC's) was represented by giant beings as well, one was red and one was blue, so it would make sense if MK's "One Being" was similar or even if the red and blue Marvel + DC universes were both fragments of the One Being mentioned in MK