The Hulk is one of Marvel’s most enduringly popular characters, so it’s no surprise the company turned to the big green guy when it came time to try and start launching the Marvel Cinematic Universe in the early aughts.

Neither Ang Lee’s 2003 Hulk nor Louis Leterrier’s 2008 Incredible Hulk reboot performed to expectations, but the character remains on the MCU canvas, so why haven’t we gotten a new Hulk movie—especially considering the character has easily proven to be one of the most popular members of Earth’s Mightiest Heroes when it comes to team-up time in the Avengers films?