Halloween  

Haritsuke, ハロウィン

Halloween is known as the second strongest Knight in command, surpassed only by Peta due to their exceptional intelligence. Despite being abandoned by his parents and frequently bullied by other children in his town, Halloween developed a fascination with dismembering small animals such as dogs during his childhood. Although many people disliked him, his childhood friend Alan remained loyal to him. One day, Alan introduced Halloween to an ÄRM that created flames, which attracted Halloween and led him to steal it. He then murdered the children who had bullied him and fled the village. Later, Halloween joined the Chess Pieces and assumed the title of Knight, becoming infamous for his fight with Alan, a member of the Cross Guard, which ended in a draw. Despite this, Halloween still harbors deep hatred towards Alan within his crippled heart.