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Ambertwo as seen in The Uncut Story of Mewtwo's Origin
, just before she dies.
Amber (Japanese: アイ I) was the daughter of Dr. Fuji, who died while she was still a child. She appeared as a speaking character during the beginning sequence that was originally cut from Mewtwo Strikes Back, but later featured on the Mewtwo Returns DVD as The Uncut Story of Mewtwo's Origin. She also appeared in The Birth of Mewtwo radio drama, released in CD format exclusively in Japan. She is voiced by Kyoko Hikami in the original Japanese dub and by Kerry Williams in the English dub.
Her Japanese name is directly based on the English first-person singular personal pronoun I, as explained by Takeshi Shudō in a blog post of his authority.
Dr. Fuji's despair at losing his daughter led him to dedicate most of his life to research into cloning, with the belief that he would be able to create a clone of Amber if he discovered the secrets of recreating life. This, of course, led Giovanni to fund him, with the condition that he would also clone Mew, creating Mewtwo.
Both Mew and Amber were cloned. Amber's clone was named Ambertwo. While they were both growing inside test tubes on New Island, Mewtwo communicated with Ambertwo telepathically. Unfortunately for Fuji, Mewtwo's genetic makeup (as a Pokémon) and sheer force of power kept him alive while Ambertwo died. Fuji was heartbroken but continued his work on Mewtwo with the hope that another try at cloning Amber would be more successful.
The next thing to happen to Fuji and his team of scientists was just as tragic. The last incarnation of Amber died as Mewtwo destroyed the laboratory on New Island, as well as any hopes of seeing her alive again.
- Amber may have been inspired by Astro Boy because, like him, she was created by a scientist hoping to recreate his deceased child.