Actually the Monster Back or Rover is typically the Strong Safety who moves up to linebacker depth as a run-stopper.
In American football, a "rover" is a defensive player who "roves" from linebacker to defensive back, or roves from cornerback to safety in the defensive bakefield. The rover has no fixed position. The abbreviation ROV stands for ROVER.
A defensive end is the name of a defensive position in American and Canadian football, situated at each end of the defensive line.
A Nickleback is a defensive position in football who is not in on all plays. It is a cornerback position who is considered the fifth defensive back on the line. This position only enters the game when a nickel defense is required.
Line Backer is an American football position. It is a defensive position.
right defensive end
In football terminology, FS means Free Safety, a defensive position.
FS stands for "free safety," a "roaming" position in the defensive backfield.
a Defensive lineman or defensive linebacker
He played defensive tackle
Strong Side Defensive End
That would be the Outside Line Backer on the Defensive Team.
Defensive end for defense, and tight end for offense
anything but defensive linemen
Monster is a defensive position. A player in that position could potentially score a touchdown by either recovering a fumble or intercepting a pass (most likely to the tight end) and running it in.
He played defensive end.
The heaviest players on an NFL team almost all play on the offensive and defensive lines. For most teams it is a defensive tackle.