Golden son
The symbolic way Archgovernor calls Darrow the golden sun at the end could be seen as the ultimate irony. Darrow, who has risen from the Reds and infiltrated Golds to ruin them, and to avenge his wife’s death, is everything but Golden, at least in the way the Archgovernor perceives him.
The sword of his people
Darrow is a symbol in itself, not only for his people, but for all of those who have been enslaved and exploited. He represents hope, a better future. He calls himself the sword of his people, doing what’s necessary, cutting where he needs to provide that future.
Home
As Darrow is about to make a suicidal entrance of the party of the most important Golds, he has a heartfelt conversation with Rogue. He thinks of what his home is, he thought it was Lykos where he grew up and where he watched his wife sacrifice herself. Rogue reminds him that it is not a place but people who help him find light when all grows dark that are the home.
The colors
Humankind in this fictional world is divided into groups based on colors. Golds are at the top, leading the rest, while the Reds are at the bottom, slaving for all the rest. There are others in between, Greens, Blues and Obsidians. Darrow sparks a change in the hierarchy and designated behavior of all the colors, not only the Reds. He befriends Ragnar, an Obsidian, who believes the Golds to be Gods and makes him his equal.