An anonymous, seasoned professional operating on the unforgiving space frontier. Tasked with delivering vital medical supplies to the planet Woden, he is accustomed to the harsh, utilitarian realities of his environment. His adherence to strict regulations is severely tested when he encounters an unexpected passenger, forcing him to weigh cold scientific equations against his own human empathy.

An eighteen-year-old girl from Earth who sneaks aboard the EDS hoping for express access to see her brother. Unfamiliar with the absolute laws of the space frontier, she operates under the assumption that rule-breaking results only in manageable monetary fines. She is petite and wears imitation gypsy sandals to mask her family's financial struggles, retaining a cheerful worldview rooted in Earth's leniency.

Marilyn's older brother who works on the dangerous planet of Woden to financially support his family back on Earth. He functions as a fiercely protective figure for his sister and historically shields her from harsh truths, such as replacing a childhood pet to spare her grief. He understands the unforgiving laws of space exploration much better than his sister does.

The commanding officer aboard the Stardust, the larger mother ship from which the EDS launched. He represents the uncompromising rules of the space frontier, delivering orders rooted entirely in regulation and scientific necessity rather than emotion or empathy.