"Shark" (シャーク Shāku) is an archetype used by Reginald Kastle/Nash in the Yu-Gi-Oh! ZEXAL anime and manga. Most of them are Level 3 or 4 WATER-Attribute and/or Fish-Type. Many have swarm effects, allowing easy Summoning of Rank 3-5 monsters. They are only supported as an archetype in the anime and manga.