"Heraldic" (紋章Monshō) is an archetype of cards used by Vetrix in the Yu-Gi-Oh! ZEXAL anime, consisting of the "Heraldic Beast" sub-archetype and "Number" monsters. Most of this archetype's support cards from the anime were retooled as "Heraldic Beast" support in the OCG/TCG.
紋章 Monshō can also mean "Medallion" or "Crest", connecting this archetype to related "Heraldry" archetype (called "Medallion" in Japanese) and the crests of the Vetrix Family. Consequently, "Seal of Serket" is technically a member of this archetype, but not of the "Heraldry" archetype.