Guardian



The Guardians are a group of protectors of the remnants of humanity. Equipped with guns and the ability to channel the Traveler's power ("magic", or something similar in function to it ), Guardians traverse the solar system and combat the malicious alien races that came to inhabit the solar system between the time that humanity was pushed back to Earth and when they began to take to the stars again.

There are three known classes of Guardian: Hunters, Warlocks, and Titans. Hunters utilize stealth, Warlocks can use the power of the Traveler, such as "spells", and Titans are equipped with "Mech Suits". It seems standard for them to own starships capable of interplanetary travel. These ships can vary in size and firepower and can be modified for specific purposes.

Trivia
They also appear to be known as knights.