Félix Fathom is cousin of Adrien Agreste, the son of Colt Fathom and Lady Amelie Graham de Vanily, nephew of Emilie Agreste and Gabriel Agreste. When visiting paris he discovers that Gabriel is Shadow Moth. Once while diguised as Adrien, Félix is given the Dog Miraculous from Ladybug which allows him to transform in superhero Flairmidable. After captured Ladybug yoyo using power of Fetch, Felix trades all of the miraculouses in yoyo including Dog Miraculous for the Peacock Miraculous.