Staff at TERRA, secretly girlfriend of Yagumo. She kept it secret to not hurt Megumi, who is her best friend. Her parents killed by Ritardando when it initially attacked Australia which is why she works at TERRA - as a way to exact revenge on the Dolems and the Mulians.
She gets aggressive at Ayato initially because Ritardando returning gives her traumatic memories of the loss of her parents, so she takes it out on Ayato since she thinks he is somehow responsible for not stopping Ritardando the first time.
She is one of the more caring characters as seen when she realises Megumi found out she is with Yagumo, causing Kim to break down to Megumi and apologise over and over. She is clearly incredibly upset and apologising for hiding the truth from Megumi.
She suffers a lot, and by the end of the show is clearly completely traumatised by the loss of her parents, made worse by seeing Yagumo get obliterated by Ayato near the end of the show. We see that she is incredibly desperate for justice when she starts shooting the projection of Ayato before collapsing. It is very easy to feel sympathy for her. Kim also becomes pregnant by Yagumo near the end of the series, as she appears to be suffering from morning sickness in two scenes near the end of the series.
Tiffany Grant’s voice acting is also fantastic at conveying the intense emotion she feels. Kim is easily one of the best characters in the show and is really easy to empathise with and feel sorry for. Sadly, in the Movie she is only seen once.