Originally Posted by
Revolutionary_Jack
If we mean the X-Men, the problem is that Wolverine is one of the X-men, he's not the only protagonist or main character of a team book, so it wouldn't make sense to call the X-men his supporting cast when he himself is basically part of the supporting cast for Scott, Xavier, Jean Gray, Storm, Kitty Pryde.
If we take Wolverine's solo title...then the supporting cast is...the Hudsons (?), Mariko, Daken (who's also a villain and currently a member of X-Force). That's not impressive, my dude.
Supporting cast needs a narrow definition. What is the cast of a character in a solo title? A more narrow definition, how much of the supporting cast count as non-superheroes, non-sidekicks, non-villains.
If we say Cap has a great supporting cast and include the Avengers, we'd need to argue that Thor has a great supporting cast and that includes Cap in his supporting cast as well, and that is category fraud.
Spider-Man and Daredevil have a traditional supporting cast, and the best in Marvel as a whole.
-- Daredevil has Foggy Nelson, the Stick, Karen Page (or he did), and now recently that includes his ex-wives, ex-girlfriends, his girls-of-the-week, denizens at Josie's.
-- Spider-Man has the biggest civilian supporting cast of Marvel, including Marvel's two biggest civilian characters who are the only ones to have made more than 1100 appearances (and counting), Mary Jane Watson, and J. Jonah Jameson. Then you have Aunt May, Robbie Robertson, Flash Thompson, Harry Osborn, Liz Allan, and so on and so forth.