Who are the subway bosses?

Question

Subway bosses who are they and how do you get them how many battles till you get to them.

Answer 1

Single Train: Emmet-21 battles in a row
Double Train: Ingo-21 battles in a row.
Multi Train: Emmet and Ingo-21 battles in a row.
Super Single Train: Emmet-49 battles in a row
Super Double Train: Ingo-49 battles in a row.
Super Multi Train: Emmet and Ingo-49 battles in a row.

Answer 2

The subway bosses are Emmet and Ingo and to fight them you need to win 21 battles in a row (hope this helps) :)