Althean

Althean is a fictional extraterrestrial species featured in the science fiction television series "The 4400". In the show's narrative, Altheans are depicted as a highly advanced civilization from the future, whose advanced technology is capable of manipulating time and space. They are responsible for the mysterious return of 4,400 abducted humans to Earth, an event known as the "Promised Land" by some.

The Altheans' primary motivation for sending the 4400 back in time is not explicitly stated but is hinted at as a measure to avert a catastrophic future. Their interventions on Earth are often subtle, guiding individuals or events to steer humanity towards a different path. The nature of their society and their ultimate goals remain a central mystery throughout the series.

While Altheans are never directly seen as physical beings within the show, their presence is felt through their technology and the actions of the 4400. They are portrayed as beings with a profound understanding of causality and a long-term perspective, willing to make significant efforts to ensure the survival of life. Their technology, such as the "Orbs" and the "Healing Room," demonstrates capabilities far beyond contemporary human understanding. The Altheans represent a benevolent, albeit enigmatic, force shaping humanity's destiny.