Kai-125

From Halo TV Series, Kai-125 is a brand-new, courageous, curious and deadly Spartan super soldier.

With the pellet that restricts her emotional capacity and ranges, Kai is rigid, disciplined, obedient to her programmers, and deeply loyal to her teammates. She has a strong connection to Master Chief, ensuring his safety above all else, which is a byproduct of her programming to follow orders and respect her superiors. Even with her emotions dulled, Kai is extremely curious and observant, noticing Master Chief's behavior variations when no one else does. Her curiosity led her to remove her pellet, which opens up a world of emotions to her. She shows a streak of rebellion when she dyes her hair, vocalizes her emotions for the first time, and experiences bursts of raw excitement that contrasts her teammates stoic nature.