* The death of Kento Marek, as he fails to protect his adopted world and his son. Made worse that Galen's assistance [[HopeSpot only bought him a few seconds]].
-->'''Darth Vader''': (''Force Chokes Kento'') I sense the presence of someone far more powerful than you nearby. Where is your Master?
-->'''Kento''': TheDarkSide has clouded your mind. You killed my Master years ago.
-->'''Darth Vader''': Then, you will share his fate. (''raises his lightsaber, only for Galen to steal it with The Force'') A son?
-->'''Kento''': Run!!! (''Vader closes his fist, snapping Kento's neck'')
* Meeting Kento's Force Ghost. Especially sad in the novel, where it's made clear that before this meeting, Galen had all but forgotten his biological parents.
-->'''Kento''': I never wanted this for you. I never wanted any of this for you. I'm sorry, son.
-->'''Starkiller''': [''as Kento fades away''] Wait! Father, no!
* The first time Vader betrays Starkiller, then the ''second'' time he betrays Starkiller.
* [[spoiler: PROXY]] making a HeroicSacrifice to save Starkiller from Vader. [[spoiler: He had been repaired by the second game, but that doesn't make his selflessness in the first any less heartbreaking.]]
* [[spoiler: Starkiller]]'s death at the end of the first game.
* In The Ultimate Sith Edition, finding [[spoiler: PROXY's broken remains]] on Tatooine. Also, [[spoiler: the death of Obi Wan Kenobi and Luke Skywalker's fall to the Dark Side.]]
** What makes it even sadder and one of said Starkiller's worst {{Moral Event Horizon}}s is that he simply casually tosses him aside to join the junk afterwards.
* In the sequel's Endor DLC, [[spoiler: [[ShootTheShaggyDog Chewbacca's death]]. Made even worse by the fact that Starkiller [[BulletproofHumanShield moved him so that he would be in the path of Han Solo's blaster shots]]. After that, the death of Princess Leia Organa and the last hope for the galaxy.]]
* In the sequel's Dark Side Ending, [[spoiler: the last thing Starkiller sees before he dies is Juno's dead body.]]
* A scene in the sequel's novelization, where an unconscious Starkiller remembers his mother's HeroicSacrifice to save her family and as many Wookiees as possible from Trandoshan slavers.
* Behind-the-scenes notes give the fate of one of the failed Starkiller clones:
-->'''Lead Cloning Technician''': Curious. One of the more stable test subjects began weapons training today. A training droid shorted out and wouldn't project the training program. He was having no problem cutting down all the other droids, who appeared to be living human beings, but he refused to attack the damaged droid. Flat out refused. Instead he smiled at the droid, and then started mumbling over and over: "proxy, proxy, proxy".
** FromBadToWorse: That droid proceeded to brutally beat the clone, who couldn't bring himself to fight back against the machine that resembled Starkiller's oldest friend.
* The scene where Starkiller enters the Dark Side Cave and sees a vision of Juno. He tries to embrace her, but she dissolves into smoke. He clutches his chest, his heart breaking.
* While making his way through the cloning facility in the second game, Starkiller starts hearing Juno and Kota's voices tormenting him. By the time he manages to shake off the hallucinations, Starkiller's on the verge of a breakdown.
--> "'''Juno'''": Who are you?
--> '''Starkiller''': Juno, it's me!
--> "'''Juno'''": You're a monster, a thing.
--> '''Starkilller''': [''on the verge of tears''] Juno, ''please''!
--> "'''Kota'''": You're Vader's puppet. Just a body filled with the memories of a dead man.