It appears that the next G.I. Joe movie is enlisting new recruits. According to Deadline, Joe Mazzello has been set to play the role of 'Mouse' in "G.I. Joe: The Sequel." No information or description of what kind of character 'Mouse' will be.
The sequel is being directed by Jon M. Chu and stars Channing Tatum, Dwayne Johnson, Adrianne Palicki and Ray Stevenson.