|Voice Actors|| Japanese:|
Celeste wears a light blue jacket over a white top, brown checkered trousers, a pink scarf and green shoes with white tips. She has ginger, wavy hair tied back in a ponytail.
As much as Celeste is a strong-willed young woman, she does not let this stop her logic. As well as this, she is a caring young woman who takes special care for loved ones and family, including her sister Claire.
Celeste first appears in the game during chapter one, she is seen walking down Flatstone Street, which Layton is shocked by because of her resemblance to Claire, his deceased sweetheart.
During the middle of the plot, Celeste is seen again by Layton and Luke, walking towards them. Layton attempts to chase her, but she swiftly walks around a corner and disappears.
Celeste then rescues Professor Layton and the team in the Research Facility, where they were cornered by The Family. She then claims that she is Claire's younger sister once the team are urged to go through a door to escape The Family. She explains that she is determined to solve the riddle of Claire's death and when the team have to split up to escape, Celeste teams up with Don Paolo. She leaves a valuable clue on where to meet up next, this is the Thames Arms.
"A young woman who claims to be Claire's sister, Celeste has taken it upon herself to solve the mystery of her sister's death, scouring the future London in search of clues. It is finally revealed that she is in fact Claire herself."