Boris's Name

What pun were they thinking of when they named Boris Badenov?

1) that Boris was "bad enough" for even the most villain loving viewers?

2) The famous Russian opera Boris Godunov?

3) Boris Godunov himself, a Russian boyer who made himself Tsar from 1598 to 1605?

4) The Goodenough surname?

5) Goodenough College, London, England?

6) Goodenough Island?

7) Any of several famous persons named Goodenough?

https://en.wikipedia.org/wiki/Goodenough

I think that whichever pun first suggested the name of Boris Badenov, we can all agree that the only thing "good enough" about Boris is all the possible puns about his name!