Looking through the RR it looks like Dishonored Char, still add their Glory to the Favor check.

This seems odd, but making sure it is correct.

It feels like it should be a negative or a 0, but the rules do not seem to cover it, or I missed it if it does.

You'd just follow the glory count rules as they are written, so the fact that a character is dishonored does not have an effect on the glory count.

Nah, just because a character is without honor, doesn't mean he can't be (in)famous.