Board Thread:General Discussion/@comment-6192846-20150304021219/@comment-6986530-20150318204358

The difference is that Elluka never assumed Lukana's name during the body swap; she always identified herself as Elluka Clockworker. Ma, on the other hand, calls herself Kayo Sudou, and that is in fact why Nemesis is eligible to be listed as a Sudou in the first place.

Looking at this carefully, I think Nemesis is definitely a member of the Sudou family--she's like a child of Kayo whom Kayo didn't choose to have. But Ma seems to be a matter of opinion--does she count as a Sudou when she's in the body of a Sudou and calls herself a Sudou, and gives birth to a Sudou? Or would you say not, because you could argue she is only stealing the identity of a pre-existing Sudou?