Talk:Bayonetta 2/@comment-79.145.156.32-20141025202354/@comment-24833974-20141025211033

He must have found out either when:

-Rosa was killed before his and her eyes, and he heard her say Mummy.

-They were on the plane, Jeanne must have said Cereza or something. Plus, Bayo behaved strangely when he asked why she knew his name, so it gave extra hints.

And, if you look closely, after they go to the present, you see Bayo and Jeanne in their old costumes coming in only to see the massacre. Then, the scene where Bayo was sealed happened, so Balder must have known she looked like Bayo in the present.