This card is one of the six chess-themed "Archfiend" cards that debuted in Threat of the Dark Demon World in the OCG and Dark Crisis in the TCG, each one featuring chessboard background, all of whom are based on a chess piece. In this monster's case, it is based on the rook, a castle-shaped chess piece, as the monster's appearance is similar to the castle piece.
This card's effect is a reference to the chess move "castling". In chess, this technique is generally used to compromise the rook's position in exchange for the king's safety, similar to how this card's effect of sending itself to the Graveyard to Special Summon "Terrorking Archfiend" from the Graveyard.
This monster's appearance is similar to the altar in "Altar for Tribute", and may play a storyline role; that altar is part of the artwork in "Pandemonium", the "home turf" of the chess-themed "Archfiends".