OOO sarcophagus coins are the sarcophagus coins in the OOO series of masked knights.

masked knight OOO is the 12th work in the series of masked knights of Heisei.

The biggest creativity of this book is that OOO's transformation belt can be transformed into different shapes by putting in three different core coins.

OOO's equipment is provided by a device similar to "vending machine" developed by Hongshang Foundation.

When the cell coin is put in, the motorcycle can be started, and the canned robot can also be summoned to fight.