Marvel Two-in-One #21

Marvel Two-in-One #21, published in November 1976, serves as a significant entry in a series designed to showcase team-ups between the Thing and other Marvel characters. During this era, the series acted as a versatile vehicle for experimental pairings and character development, often utilizing the Thing's popularity to introduce or bolster secondary characters. This specific issue features a script by Bill Mantlo and art by Sal Buscema, a creative team whose consistent collaboration defined much of Marvel's output in the mid-to-late 1970s.

The issue notably continues the serialized adventures of the Thing alongside the team-up format, focusing on the character's struggle to manage his dual nature. Sal Buscema's penciling style was highly regarded for its clarity and dynamism, which helped provide a stable visual identity for a series that shifted tone and subject matter frequently. At the time of its release, the comic was received as a standard but solid example of Marvel's 'team-up' business model, appreciated by readers for its accessibility and the reliable integration of the Thing into wider cosmic and street-level narratives.