Sabine Hallow: A disgruntled Sister of Battle who turns yandere at first sight for Octus.
Octus Humblestock: A himbo with a heart of gold and more to himself than he realizes.
Lacey Braal: A mousey, girl-next-door-type Guardswoman who is Octus' best friend in the Guard.
Katrina Lady: A Valhallan (Scandinavian/Russian) Commissar who is both competent and has a wicked sense of humor.
(Unfortunately, the reference images I used for both Lacey and Lady are quite explicit. I don't know if the links for them will work.)
Miko: A bunny girl Abhuman who runs an Underhive gang (Mirko expy)
Sona Roxxy: A 'heretical' Yandere who isn't quite right in the head. Her loyalties are not set in stone *wink*
Diana Winters: An exiled noblewoman who has made a name for herself in the Underhive and now leads the Guild of Coins (Lady D expy)
Violet: Diana's childhood friend and 'pet'. Totally not a Psyker. Nothing to see here. (Hex Maniac expy)
Ashe Bellatrix: A relatively mundane Ordos Hereticus Inquisitor who turns out to be shockingly reasonable.
Sister Josmica: Sabine's friend in the Sororitas
Sister Superior Geneva: A stern and stubborn Sororitas who is initially quite skeptical of Octus and his story, Lilya's best friend.
Canoness Lilya: A gentle, loving, and motherly Canoness (leader of a Sororitas Order) who cares deeply for her subordinates.
Captain Amelia: An Imperial Navy officer with a chip on her shoulder and something to prove due to her Abhuman (cat girl!) heritage, Captain of the Immortal Spirit.
Osiris of House Ra: One of the Navigators of the Immortal Spirit and last heir of a fallen Navigator House, brought up on stories of former greatness, he strives for a return to that glory.
Lady Nuit of House Ra: One of the Navigators of the Immortal Spirit and mistress to the fallen Navigator House of Ra, Supposedly mutated beyond what is publicly acceptable, in reality, she's still quite beautiful.
Elodia Auras: A young Eldar Exodite with a burning curiosity for the world and a more reasonable outlook than her peers.
Ilioch Auras: Elodia's father. Prideful, arrogant, and prejudiced, Ilioch is basically an Eldar stereotype.
The Dragonlord: So old that his name has been lost to time. Saw the Fall of the Eldar and grew tired with the events of the galaxy. He currently lives out his days in peace and quiet on an Exodite world. (Honestly, he's kinda a bro)