As spoiler-free as current technology permits.

The Humans

Alexander Horatio Jardin, Ensign Second-class, third-seat helmsman aboard Bellarmine, and now impromptu ambassador to the Loroi Empire on behalf of humanity.

Alex was born on December 17, 2140 in Redding, California. He graduated with Salutatorian honors from the Terran Colonial Authority Aerospace Academy at Hellas Planitia, Mars in 2159 before being accepted into the Scout Corps and posted to ECS-154 Bellarmine.

Ellen Kirkland, Ensign Second-class, from Seattle, Washington. Alex's academy pal, almost two years Alex's senior, Ellen graduated with honors in the same "TeeCee triple-A" class as Alex, and was posted together with him to Bellarmine in 2160.

Carl Hamilton, Captain of the Earth Scout Corps long-range scout vessel ECS-154 Bellarmine during the Alien Contact mission in 2160. Hamilton is the most highly decorated of active Scout Corps captains, and assignment to his ship was a greatly coveted honor.

The Loroi

Teidar Pallan Leinnol (Fireblade), marine major in charge of security aboard the Loroi command ship Tempest. As a member of the Teidar or "Unsheathed" caste, Fireblade possesses formidable telepathic and psychokinetic abilities, amplified by the headpiece she wears.

Listel Tozet Eilis (Beryl), senior tactical analyst aboard Tempest. Beryl's eidetic memory, emblematic of the Listel or "Observer" caste, enables her to fulfill her role as a telepathic data repository as well as a data analyst.

Mizol Parat Sedel (Tempo), senior intelligence officer aboard Tempest, responsible for diplomatic and flag-level communications. Mizol tend to be powerful telepaths, and Tempo is no exception. Though her abilities lack the raw amplified force of an Unsheathed, she makes up for this in the subtlety of their use. 

Torrai Lashret Dellasoni (Stillstorm), captain of Tempest and commander of Strike Group 51, the Loroi fast-attack fleet that recovered Alex. One of the few captains to have survived twenty-five years of almost continuous front-line fighting, Stillstorm is a living legend, but such experience has come at a cost.

The Aliens

Rigai Mozin, captain of the Barsam courier vessel Prophet's Reason. Though fearsome in appearance, the Barsam are a peaceful people, and seek to support their Loroi allies in ways other than direct force. Mozin serves the Loroi aboard his swift, elusive vessel as a scout, courier, and provider of "special services."

Historian Emissary, a virtual personality construct sent on behalf of the mysterious Historians to communicate with other races and collect information. Remarkably flexible as to what kind of hardware it can inhabit, the Emissary transmits itself from device to device as the situation demands. Unsure of the full capabilities or motives of such constructs, the Loroi are careful to restrict access of their own computer systems.

To be updated as necessary.