The Marvel Team-Up #135 comic book from 1983 features the first appearance of several characters, including Nightcrawler and Shadowcat. This vintage issue belongs to the Copper Age era of US Comics and showcases artwork by artists such as Allen Milgrom and Ron Frenz. The story follows the X-Men superhero team in an action-packed adventure filled with superheroes like Spider-Man, Wolverine, and Storm, making it a must-have collectible for fans of Marvel Comics.