Theratrons

Theratrons are a class of fictional energy beings that appear in the Marvel Comics universe, primarily associated with the cosmic entity known as the Beyonder. They are described as immensely powerful, god-like entities capable of manipulating reality on a vast scale. Their origins are intrinsically linked to the Beyonder's realm, the Beyond-Realm, and their purpose is often to serve as extensions of his will or as guardians of his power.

These beings possess immense cosmic energy and can manifest in various forms, often appearing as colossal, luminous figures. Their abilities include instantaneous teleportation, energy projection, matter manipulation, and the creation and destruction of entire universes. Theratrons are not typically depicted as having individual personalities or motivations beyond their service to the Beyonder; they are more akin to forces of nature or celestial constructs.

The Theratrons first gained prominence during the Secret Wars storyline, where they were instrumental in the Beyonder's machinations and his interaction with Earth's heroes and villains. While their specific appearances and roles have varied over different comic book runs, they consistently represent a high level of cosmic power within the Marvel cosmology. Their existence highlights the boundless potential and the sheer scale of power that can be explored within the Marvel multiverse.