McCoy is – Banner? The snarky civilian type among military-officer types, as well as the go-to expert on medicine in general and fake-your-death serums in particular?
The Avengers was quintessentially '60s, but it was also quintessentially English. I thought Patrick Stewart could pull off the posh Englishman role better than Shatner.
William Shatner as Wolverine.
Leonard Nimoy as Charles Xavier
Nichele Nicol as Ororo
James Dohan as Banshee, later on he could guest star as The Blob.
Unforunately the main X-men doctor is female so I can’t really think of a good role for DeForest Kelly.
Geroge Takei as Silver Samurai.
Walter Koenig as Colossus. (I’m thinking as a CGI character)
Capt. Kirk – Star-Lord
Mr. Spock – Groot
Dr. McCoy – Rocket
Lt. Uhura – Gamorah
Scotty – Drax the Destroyer
Harry Mudd – Yondu
Elaan of Troyus – Nebula