Antoine D'Coolette (アントワン・デクレット Antowan Dekuretto) is an adult character in the Sonic XX 2D/3D Anime series.

Antoine is presumably one of the Weakest Royal Space Marines in the Commonwealth despite his good Swordsmanship but loses over the far superior Bartleby Montclair.

He is also known to speak two languages at once, Acornite and Coniferian,

Metarexophobia and Meeting Sir Christopher

Christopher Thorndyke along with Frances came to visit Knothole to expand the roster of their Light-sided Freedom Fighters group.

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