Underworld Blitzers provide their teams with a small boost in armour and also either a killing thread or a support role.
Descriptions on the individual Underworld Player positions, the roles they can fill and skills you should select for them.
The Linemen of an Underworld team tend to fill the role of ball hunting players, as the Blitzers dish out damage and the Throwers handle the ball.
Underworld Throwers will typically be the main ball carriers on the team so skill selection will often follow this idea.
Warpstone Trolls give an Underworld team a much needed strength boost and can tie up a few opposing players.