#protean gate

Amury, the main setting, sort of a “dimension” that has no native population but does have a small town and no official government

Arcon, another “world,” and its native population of Arconians (bird people)

Arconism, the genetics-based religion that is the majority in Arcon and helps comprise the social fabric

Proteans, people whose bodies are artificially modified using technology (not biology) …… think animorphs, but with more dubious legality

“The War in Earth,” a background conflict that one of our main characters Halley is a refugee from

Halley’s backstory in general (it is not spoilery)

O/Oracle, a major player/aggressor in the war

The Ravus, a humanitarian organization (supposedly) providing aid to victims and trying to end the conflict

ID chips, a primary technology that’s used sort of like a passport between worlds, but it’s tied to your genome

The Council—sort of like the UN, an org that provides loose inter-world government