"ZS -", short for "ZEXAL Service" in English and "ZEXAL Servers" (ＺＳZearu Sābasu) in Japanese, is an archetype of monsters used by Yuma Tsukumo and Astral in Yu-Gi-Oh! ZEXAL, created through the power of ZEXAL. They were first introduced in Primal Origin, but did not receive support until Lightning Overdrive.
All "ZS -" act as support cards for "Number 39: Utopia", its evolved forms, and the "ZW -" archetype.
In the English dub of the Yu-Gi-Oh! ZEXAL anime, this archetype is either pronounced as an initialism[1] (unlike "ZW -" cards) or entirely omitted when speaking the card's name.[2] In Yu-Gi-Oh! Duel Links, it is spoken as "ZEXAL Service", although it is still spelled as "ZS -" in speech bubbles.
