History
In the year 2046, Groot had transformed into a giant, mindless monster and Captain America watched as the Hulk attempted to take him down, but was crushed in his jaws. Iron Man then set out to retrieve Rocket and set out controlling an autonomous Iron-Man suit and travelled to Knowhere and tried to convince him to return but was unsuccessful. He tried to force Rocket to come with him, but Rocket destroyed the Iron Man suit. Upon the destruction of his autonomous suit, Groot attacked their S.H.I.E.L.D. Helicarrier and tore it half right where Iron Man was standing and he was killed when the Helicarrier exploded.[1]