* Custom Songs: The Guitar Hero community has created custom songs for various games. It's possible that someone has made a custom Iron Man song, which you can download and import into your game. You can search online for Guitar Hero custom songs.
* Rock Band: While not Guitar Hero, Rock Band has downloadable content, and they might have "Iron Man" by Black Sabbath available.
* Use a Real Guitar: You can always learn to play "Iron Man" on a real guitar! It's a classic riff that many guitarists enjoy learning.
Keep in mind:
* Legality: Using custom songs in Guitar Hero might be against the game's terms of service.
* Quality: Custom songs can vary in quality, so you might not find a perfect Iron Man experience.
If you want to play Iron Man, learning the song on a real guitar is probably the most satisfying and rewarding way to go!