Isn't he a COIE one-off? I'm talking who is going to be her mentor long-term.
Arrow, in flashbacks had Slade. Batwoman's past training, that we don't get to see, doesn't seem to have a special mentor there either. She's got no-one guiding her so far. Heck, even Batman has Alfred.
If they keep Kevin Conroy's Bruce around to be her mentor, great, but not so sure it will happen.