There is no Avengers movie titled "Avengers: Doomsday". The Avengers movies in the Marvel Cinematic Universe (MCU) are:
- The Avengers (2012)
- Avengers: Age of Ultron (2015)
- Avengers: Infinity War (2018)
- Avengers: Endgame (2019)
Mark Ruffalo has played the role of Bruce Banner/Hulk in the MCU, appearing in several movies including:
- The Avengers (2012)
- Avengers: Age of Ultron (2015)
- Thor: Ragnarok (2017)
- Avengers: Infinity War (2018)
- Avengers: Endgame (2019)
- Shang-Chi and the Legend of the Ten Rings (2021)
- She-Hulk (Disney+ series, 2022)
It’s possible that you may be thinking of a different movie or project that Mark Ruffalo was not involved in, but without more information, it’s difficult to provide a specific explanation. If you have any more details or context, I’d be happy to try and help further!