Kris is also the brother of John Mangum Jr., a former NFL player better known as the defensive back for the Chicago Bears from 1990 to 1998.

[2] He ended his college football career ranked 14th all-time in receptions at Ole Miss, collecting 74 catches for 729 yards during three seasons.

[2][4] In his senior season of 1996, Mangum made 29 receptions for 264 yards and 2 touchdowns and was a first-team All-SEC selection.

[2][5] Mangum led the SEC with 36 catches for 391 yards and two touchdowns, the most receptions by a Rebels tight end since Wesley Walls established the mark in 1988.

[7] Mangum spent his first six years of his NFL career as a backup to former Panther tight end, and fellow Ole Miss alum, Wesley Walls.