Ruffalo, 50, has portrayed Bruce Banner aka The Hulk in three movies of the franchise till now, including the two "Avengers" movies and "Thor: Ragnarok".
He is set to reprise his role in "Avengers: Infinity War" and says he has had "a lot of say" in his character's progression, reports aceshowbiz.com.
In an interview with Collider magazine, Ruffalo said: "Oddly enough, I joke with people that this is like doing a TV show where you shoot one episode every three years.
"There's a continuity to it and when we talked about it with Marvel and Kevin Feige we really do talk about it as the character's progression. I've been able to have a lot of say in where it goes, and you're also dealing with a new script and a new world but the characters feel like they're making a journey.
"And it does feel like one goes to the next and goes to the next. It feels like a long serial which is nice, I think."
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)