Leven Rambin and Jack Quaid are the newest "tributes" in the cast of "The Hunger Games."
They join Jennifer Lawrence, Josh Hutcherson and Liam Hemsworth in Lionsgate's franchise hopeful.
Rambin, who has appeared in "CSI: Miami," "Scoundrels," and "Grey's Anatomy," 
among others, will play Glimmer. Quaid, the son of Dennis Quaid and Meg Ryan, will play Marvel.
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.
Both Rambin and Quaid's characters are a "career tributes" who have trained to fight in the games. Both are known for their ruthlessness.
Elizabeth Banks is circling a role in the movie, as well.
Also read: Two Newcomers Join Jennifer Lawrence in 'The Hunger Games'
"The Hunger Games" is the first in a trilogy and has sold 3 million copies in print in the United States. It 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."
Gary Ross ("Seabiscuit") will direct, and Nina Jacobson’s Color Force will produce in tandem with producer Jon Kilik. Billy Ray ("Shattered Glass," "State of Play") wrote the screenplay.
The film hits theaters on March 23, 2012.