|Days of Future Smash, Part 1 - The Dino Era|
|Original Airdate||May 10, 2015|
|Directed by||Dan Duncan|
|Written by||Paul Dini|
|Previous||Wheels of Fury|
|Next||Days of Future Smash, Part 2 - Smashguard|
Leader has escaped from the S.H.I.E.L.D. Tri-Carrier and has broken into the Latverian Embassy to steal one of the time belts to go back in time. Hulk chases Leader back to the Mesozoic and Hulk battles Leader and his mind-controlled dinosaurs while befriending a young Devil Dinosaur. Back in the present, the rest of the Agents of S.M.A.S.H. experience a timeline where intelligent dinosaurs exist and they work with El Diablo (an intelligent version of Devil Dinosaur) and Spider-Raptor to save Moon-Boy and the primitive humans from being exterminated by King Sauron's forces.
- Red Hulk
- The Leader
- King Sauron
- General Thunder Lizard Rossasaurus
- El Diablo
- It is revealed that Hulk was the one who brought Devil Dinosaur and his friends to the Savage Land, which is how Dinosaurs in the present day weren't extinct.