Okeniyi will play Thresh and Stenberg will play Rue.
The characters are "tributes."
In Suzanne Collins' novels, each district of Panem is required to send two tributes — children between 12 and 18 years old — to participate in the annual Hunger Games.
Rue is described as a small 12-year-old girl who forms an alliance with Katniss Everdeen — Lawrence's character. Thresh is described as strong.
There are 24 "tributes" from a dozen districts in the movie. Lawrence and Hutcherson, the stars, are the "tributes" from District 12.
Liam Hemsworth plays the role of Gale Hawthorne.
Based on a novel by Suzanne Collins novel, "The Hunger Games" is the first in a trilogy and has sold 3 million copies in print in the United States.
“The Hunger Games” is set in a dystopic world, where teenagers are forced to participate in the annual “Hunger Games,” a fight-to-the-death televised event.
Lionsgate has high hopes for the film, which it hopes to turn into a franchise to potentially rival Summit's mega-grossing "Twilight."
The film hits theaters on March 23, 2012.