Avengers: Age of Ultron is easily one of the most anticipated films of the year and while we're just weeks away from its premiere, Marvel has gifted us with a short fighting sequence featuring Iron Man and the Hulk. If you've been following the trailers, you'll have noticed the two heroes duking it out in a heated battle. As it turns out (spoiler alert), the green giant is attacking his fellow Avenger because Scarlet Witch has him under a spell. In the scene, Tony Stark can be heard saying, "That little witch is messing with your mind." Everything makes so much sense now. Take a look at the action-packed clip below. Avengers: Age of Ultron hits theaters May 1.