The Indianapolis Colts promoted outside linebacker Daniel Adongo and tackle Xavier Nixon from the practice squad to the active roster on Tuesday.
The Colts agreed to terms with fullback Robert Hughes and defensive tackle Jeris Pendleton, who will be signed to the practice squad.
The team also placed inside linebacker Mario Harvey and running back Daniel "Boom" Herron on injured reserve.
Adongo (6-foot-5, 257 pounds), was originally signed by the Colts on July 25 and was signed to the practice squad on Sept. 1. Prior to joining the Colts, he most recently played for the Southern Kings of Super 15 Rugby, the highest level of pro rugby in the world.
Nixon (6-6, 314) was signed to the Colts' active roster off the Washington Redskins practice squad on Sept. 24. He was inactive for all four games before being waived on Oct. 28. He was then signed to the Colts' practice squad the following day.
Hughes (5-11, 235) rejoins the Colts after being waived by the team on Oct. 8. He played in one game this season, catching one pass for six yards.
Pendleton (6-2, 334) was originally selected by the Jacksonville Jaguars in the seventh round of the 2012 NFL Draft. He played in four games and made one solo tackle in 2012 before being released by the Jaguars on May 22. He then signed with the Dallas Cowboys on June 12 and was released on Aug. 26.
Harvey played in all 12 games this season and totaled 11 tackles and eight special teams stops. In two years with the Colts, he has appeared in 25 games, making 15 tackles and 15 special teams tackles.
Herron was signed by the Colts from the Cincinnati Bengals' practice squad on Oct. 9. In six games this season, he recorded five rushes for 33 yards and one reception for 57 yards. He also contributed with six special teams tackles.