The Big Guys

They are the 21 guardian ghosts of Bill Burton.

About
They are the 21 members of Bill Burton's former football team called the "The Big Guys". When Bill refused to give an autograph, a fan cuts the brakes of their bus killing all of them in an accident, where only Bill barely survived.

O.S. Football Team
O.S. Football Team

Description: By using his Footballer, Bill is able to oversoul all 21 members of his former Football Team. When Oversouled, they all work together in perfect tangdem, following the orders of Bill as if they still were a team. They attacks people using the tactics learned while playing the game and can make a mean tackle.
 * Shaman: Bill Burton
 * O.S. Type: Spirit Type
 * Spirit Ally: Bill's Football Team (human ghosts)
 * Medium used: Footballer

Attacks


 * Big Touchdown: The only attack shown so far. Bill and his team try tackle the opponent. This was first show when Bill faced the X-Laws but was defeated before it hit.


 * Ready, Set Steel Curtain: An anime only attack. Bill has his team create a wall that surrounds his opponent. The Teammates prevent the opponent from exiting the wall. This was used against Yoh so he can watch his friends get killed by Ashil.

Unamed O.S.(Anime Only) Description: By using himself, Bill turns into a red giant with horns. However, Bill couldn't control his powered-up Furyoku and his body couldn't handle it. This ends up killing him.
 * Shaman:Bill Burton
 * O.S. Type: Giant Type
 * Spirit Ally: Bill's Football Team
 * Medium used: Himself

Attacks
 * Guest Touchdown: Bill tackles his opponent. This was used against Tao Ren.

Anime/Manga Differences
In the anime, there is a second Oversoul that Bill uses that turns him into an red skinned giant. But the furyoku he uses to create it backfires on him and kills him (knocks him out in the English version).