Gatekeeper Clown (門番ピエロ, Monban Piero; also known as Gatekeeper Pierrot) is a ring ÄRM of the most powerful Dimension type that summons people from another world into MÄR-Heaven.
When activated, it conjures a literally cross-eyed clown before the summoned and determines the number of passengers by a roll of dice. After fulfilling its role, the ÄRM will break. Bequeathed to Alan from Queen Diana (1st war), and to Alviss from Gaira (2nd war).
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Gallery[]
The Gatekeeper Clown ring
The Gatekeeper Clown door in the manga.