[quote=@Lord Wraith]
<Snipped quote by Superboy>

I have not watched Creed, but I've also haven't watched any of the Rocky films.
[/quote]

I can't say I'm a gigantic fan of the Rocky movies (apart from the first one), but Creed was fantastic, and doesn't really require any prior knowledge of the series beyond "Rocky was a boxer" and "Apollo Creed was another boxer."  Definitely a strong recommend.