Kimiko has been one of the main characters on The Boys since season 1, and so far she hasn't said a word. The silent supe is an integral character in the series, but many viewers may be curious as to why Kimiko is so quiet. While it takes some interpreting, there is actually a definitive answer as to why Kimiko Miyashiro doesn't speak on The Boys.
Kimiko is an integral member of the Boys, as well as being the team's only supe (a nickname given to superheroes in The Boys). Kimiko and her brother Kenji grew up in Japan, before being kidnapped by the Shining Light Liberation Army at a young age. The army brutally killed the sibling's parents before taking the kids to fight in the Phillippines. Later, Kimiko was separated from her brother after she was taken prisoner and smuggled to the United States. There, she was given Compound V, giving Kimiko powers that consist of increased strength, durability, and a regenerative healing factor. In the events of The Boys, Kimiko is rescued by the group and decides to join them in their battle against Vought.
Related: The Boys Season 3: Every (Living) Super & Their Powers Explained
From her time with Shining Light to now, Kimiko hasn't been able to talk. Although she communicates through writing and a unique form of sign language, Kimiko seemingly isn't able to speak. However, The Boys season 2 gives a hint as to why Kimiko is mute. Season 2 not only explores Kimiko's backstory but also reunites her with her brother Kenji, although briefly. Kenji (who can talk) explains that the trauma of seeing her parents violently killed caused Kimiko to stop speaking at an early age, something she has carried on into her adult life. Although the show doesn't explain if she is unable or unwilling to
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