Who is a big green dude in avengers?

The big green dude in the Avengers is the Hulk, also known as Bruce Banner. He is a superhero with incredible strength and durability, transforming into the Hulk when he becomes angry or stressed. Portrayed by actors like Edward Norton and Mark Ruffalo in the Marvel Cinematic Universe, the character is a key member of the Avengers team, known for his immense power and unique personality.