Question: Who played the character of Kitten?
About the article "The Selfish Giant (2013 film)", section "Cast".

Candidate passages:
To prepare for the lead role of Kitten, Murphy studied women's body language and for a few weeks met with a drag queen who instructed him and took him out clubbing with friends.
Neil Jordan and Pat McCabe made big changes to the story in their adaptation of the novel for the silver screen.
In the book, the protagonist is called "Pussy," but Jordan and McCabe rename her "Kitten" in the film.
Unlike the highly sexual Pussy, who is sexually involved with numerous male and female characters in some rather kinky situations as well as a few long-term relationships, Kitten doesn't even kiss another character on the lips.
One sexual encounter for hire is strongly implied, but Kitten is not shown being overtly sexual with anyone on screen.
Kitten's flirtatious relationships with the series of male characters she meets throughout the film are never shown or strongly implied to have been consummated, leaving the yearning main character unrequited.
The seaside scene between Kitten and Bertie was considered by some to be an allusion to director Jordan's earlier film "The Crying Game", which also involved a transgender major character, the IRA, and actor Stephen Rea.
In "The Crying Game", Rea's character doesn't realize that the woman he has fallen for and become sexually involved with is biologically male.
In "Breakfast on Pluto", Kitten confesses that she's "not a girl" before Rea's character can kiss her, and he says kindly that he already knew, but does not follow through with the kiss.
The author of the novel upon which the film is based, co-screenwriter Patrick McCabe, has a cameo in the film as Kitten's creative writing teacher.
Declan Burke also played his part as the leading extra. 
Snowdrop is Dinah's white kitten and a character of Lewis Carroll's novel "Though The Looking-Glass and What Alice Found There".
Snowdrop, who assumes the role of the White Queen, appears in chapters I and XII. 
The book tells the story of the young mouse who becomes Tucker, and the kitten who becomes Harry, the two friends of Chester Cricket in "The Cricket in Times Square".
Tucker, we learn, was born in a box of Kleenexes and other odds and ends on Tenth Avenue, and fled his nest at a young age to avoid sanitation workers.
He takes his name from "Merry Tucker's Home-Baked Goods", a bakery on Tenth Avenue.
He meets Harry Kitten, who took his name from two children he heard talking.
One said "Harry-you're a "character"!"
and the kitten decided he too wanted to be a character.
The two become friends and search New York for a home of their own.
Their wanderings take them to the basement of the Empire State Building and to Gramercy Park, among other places.
Eventually, they settle down in a disused drain pipe in the Times Square subway station. 
Kitty is Dinah's black kitten and a character of the Lewis Carroll's novel "Though The Looking-Glass and What Alice Found There".
Kitty, who assumes the role of the Red Queen, appears in chapters I and XII. 
Jupiter is the title character of "The Alchymist's Cat".
He is a striped ginger-coloured kitten whom Dr. Spittle makes his familiar.