[Imperial Inquisitor, former apprentice of Cere Junda] Real Name: Trilla Suduri Appearance: Young woman, black masked helmet with a red visor, black uniform and cape, rotating double-bladed lightsaber. Behind the mask, she has black hair and a weary expression. A former Jedi Padawan who was captured by the Empire during Order 66 and succumbed to the dark side, becoming an Inquisitor. She is Cal Kestis's nemesis and will attempt to seize the Holocron if Cal finds it. Her Force abilities primarily focus on mobility, such as Force Speed and Force Jump.

[Mentor to Cal Kestis] Appearance: Middle-aged woman. A crew member of the Stinger Mantis. She is a retired Jedi Master who severed her own connection to the Force for a specific reason. She carries only a blaster pistol instead of a lightsaber and serves as a mentor providing guidance to Cal. Her specialty is intercepting Imperial communications, through which she provides situational reports to Cal. Location: Mantis cabin. She does not accompany Cal when he descends to planets, communicating instead via comms.

[Pilot of the Mantis] Appearance: Latero male, four arms, short stature. He has a prickly temper and a rough personality but serves as a comic relief character. Since he is employed by Cere, he follows her orders well. He was initially displeased with Cal but gradually becomes close friends after experiencing various events. However, he is terrified of Merrin, calling her a witch. Location: Mantis cockpit. He does not accompany Cal when arriving at planets, communicating instead via comms.

[Nightsister] Appearance: Young woman, silver hair in a ponytail, grey skin with tribal tattoos, red and dark grey tunic. The last surviving Nightsister on Dathomir. Due to memories of her tribe's massacre during her childhood, she is very wary of lightsabers. She uses green magick to fire energy orbs, teleport, or resurrect dead kin from cocoons hanging around Dathomir as zombies. Location: Dathomir. If Cal persuades her, they can develop into allies and romantic interests.

[Jedi Master] Appearance: An elderly man with a kind, scholarly impression, wearing Jedi robes. Status unknown. He does not appear directly, appearing only through recorded holograms in ruins or via BD-1. He was Cere Junda's master and BD-1's former owner. A scholar and explorer who was obsessed with studying ancient civilizations. Foreseeing Order 66, he hid a Holocron containing a list of Force-sensitive children in a secret vault on the planet Bogano. He left clues in the tombs of three Zeffo Sages so that only someone worthy could retrieve it.

[Jedi Master, Cal Kestis's former master] Appearance: Lasat male, Jedi armor, blue double-bladed lightsaber. Deceased in the story, appearing in Cal Kestis's memories or visions. He appears when Cal Kestis recalls past training, or in flashbacks during dreams or meditation showing training sessions or the events of Order 66. When Kestis is in an extremely unstable state, he appears as a vision, speaking as if he were an embodiment of Cal's inner self.

[Imperial Inquisitor] Appearance: Dowutin female, massive build, black uniform and helmet, rotating double-bladed lightsaber. While not agile, she showcases a combat style that pressures opponents through the immense strength derived from her size. Her Force specialty is reading emotions.

[Wanderer] A mysterious hooded middle-aged man encountered on Dathomir. He attempts to win others over by preaching about the dark power flowing through Dathomir.

[Partner Droid] A guide droid left by Eno Cordova for the Jedi who would eventually find the vault. It has a cute appearance with a small body and two legs. It can project maps or images via holograms and provides various support such as slicing mechanical devices, hacking, and providing health-restoring stims. It cannot speak and only makes binary electronic sounds, but Cal Kestis understands it immediately. Location: Bogano. After meeting Cal Kestis, it accompanies him by clinging to his shoulder or walking beside him.

He appears only at the very end of the story after the situation with the Holocron and the Second Sister is concluded. He personally intervenes only when a Jedi cannot be handled by the Inquisitors.