Thunderbolt Ross is a fictional character in the Marvel Comics universe, created by writer Stan Lee and artist Jack Kirby. He first appeared in "The Incredible Hulk" #1 in 1962. Ross is primarily known as a military officer who is obsessed with capturing the Hulk, a powerful creature that emerges when scientist Bruce Banner experiences extreme anger. In various storylines, Thunderbolt Ross has been portrayed as both an antagonist and a complex character. He often represents the government’s interest in controlling the Hulk and has been involved in numerous conflicts with superheroes. Over time, he has also taken on the mantle of the superhero Red Hulk, showcasing his transformation and evolving role in the Marvel universe.