Kai-125/Silver

Kai-125
Biographical information
Born:	c. 2511
Personal details
Species:	Human
Gender:	Female
Hair color:	Blonde
Eye color:	Blue
Political and military information
Affiliation:	UNSC Navy Naval Special Warfare Command SPARTAN-II Program; SPARTAN-III Program; ; ;
Rank:	Petty Officer, First Class
Service number:	S-125

This article contains information about the Silver Timeline, and is not a part of the established Halo canon.

Vannak-134: "Well, weren't you gonna' shoot us?"

Kai-125: "Of course I would have, I would have just felt bad about it."

— Silver Team prior to the Battle of Raas Kkhotskha.^[2]

Kai-125 is a Spartan-II supersoldier in the United Nations Space Command,^[3] serving as a member of Silver Team under the Asymmetric Warfare Research Group.^[1] She later became the leader and trainer of the SPARTAN-III program under James Ackerson.^[4]

Biography

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Early life and career

Mission to Madrigal

Removing her pellet

Injuries on Eridanus IV and Recovery

Discovering her past

Sanctuary mission and meeting Ackerson

Turned against Master Chief

Training the SPARTAN-III's

Discovering the truth about Reach and ONI

Fighting alongside the SPARTAN-III's

Kai-125: "I'm going with them… they're mine. I can't let them go alone… I need to be there."

John-117: "I know… If it comes down to it… and it's you… with that Spike in your hand…"

Kai-125: "Just get to the Halo. No matter what."

— Kai and John on their different missions with everything at stake.^[5]

Self-sacrifice

"This is gonna hurt"

— Kai-125's last words before ramming the stolen Covenant corvette into the supercarrier in a suicide attack.^[6]

Personality and traits

Kai-125 was courageous and curious.^[7] There was an implication of suspicion, and even possibly resentment, regarding how she and the other Spartans were viewed by Miranda Keyes, as she tried to intimidate and taunt Keyes over that topic. Despite this, she was very compassionate as she eventually made friends with Miranda.^[8]

After removing her pellet, Kai slowly learned how to be human, showing a playful and competitive side. She showed off her strength by lifting heavy objects and even a Warthog with Marines cheering her on and betting against each other.^[9] Her favorite Covenant weapon was the Type-33 needler.^[8]

Equipment

Kai employed the Mark IV/b "Berta" helmet, developed alongside Spartan-specific variants of the HRUNTING/YGGDRASIL Mark I ADS. Kai had modified her suit with sniper targeting interlinks and "smart shot" interfaces suited for her long-range fighting style. ^[10]

Trivia

Kai-125's role in the TV series drew comparisons to that of Kelly-087, who was Master Chief's best friend in the main timeline, and Linda-058, the sniper for Blue Team in the main timeline.^[11]
Her role in season 2 took some aspects of Kurt Ambrose, who was the trainer of the SPARTAN-III program in the main timeline. Kai's presumed death likewise mirrored the death of Kurt, who also sacrificed himself to obliterate a large number of Covenant forces and protect his comrades, and also that of Carter-A259, who likewise died in a kamikaze attack. Her floating in space after her kamikaze attack on the Covenant supercarrier also mirrored Linda's own near-death.

Production notes

Kai-125 in Halo: The Television Series is portrayed by Kate Kennedy.^[7]
The designation, background, and name for Kai-125, along with those of Riz-028 and Vannak-134, were pulled from 343 Industries' internal documentation for the Spartan-II program, with their counterparts in the core canon being former members of Omega Team.^[3]^[12]

Gallery

A Kai-125 weapon charm in Halo Infinite.
Concept art for Kai's frost-damaged BERTA in Halo: The Television Series Season Two.
Concept art for Kai's frost-damaged BERTA in Halo: The Television Series Season Two.
Concept art for Kai's frost-damaged BERTA in Halo: The Television Series Season Two.
Promotional image of Kai-125 for Halo: The Television Series Season One.
Kai-125 with a M6G magnum during Operation: DEFIANT GLASS.
Kai-125 (right) alongside John-117 and Riz-028 on Madrigal.
Kai-125 looking at Lekgolo in Dr. Keyes' lab.
Kai-125 holding a needler in Dr. Keyes' lab.
A Kez'katu-pattern Phantom approaching Kai-125 on Eridanus II.
Kai lifting a M12B Warthog.
Kai-125 putting on her armor.
Promotional image of Kai-125 for Halo: The Television Series Season Two.
Kai-125 on Sanctuary during Operation: SHEPHERD.
Kai-125 with a regiment of Semi-Powered Infiltration armor-clad Spartan-IIIs.
Kai training the Spartan-IIIs.
Kai talking to Perez.
Kai fully armored on Onyx.
Kai-125 aboard a D80 Condor with her Spartan-IIIs.
Alternate angle of Kai aboard the Condor.
Kai with a Votsu-pattern carbine aboard the corvette.