Rook is a summon of Ham's Personal Attribute and Conceptual Magic, Rule - Chess.[1]
Appearance[]
Rook is a gigantic armoured warrior of white and black with a black plume.
Personality[]
As a summon, Rook follows the command of Ham.[1] It is unknown if he has any autonomous thinking.
Abilities[]
Although very little of Rook's power has been revealed, he appears to be a very powerful summon. It was able to kill Nightmare Oz.[1]

Rook killing Nightmare Oz
Swordsmanship: The Rook has an extremely high level swordsmanship. An unskilled slash of the Rook killed Nightmare Oz & Goldy.[1]
Combat Style[]
The Pawn is a close range fighter that closes down the targets in order to strike them with his large broad sword.
Items[]
Weapons[]
- Broad Sword: The Rook equipped a large Broad Sword which had a blade at least 7 times bigger than a normal sized human.[1]
History[]
Season 2[]
Beyond the Boundary Arc[]
Rook was summoned by Ham and it attacked Nightmare Oz.[1]