
Arachnos (Japanese: スパイド, Supaido; English dub: /əˈræknoʊ/) are a type of four-legged, spider-like enemies in the Xenoblade Chronicles series. Queens (Japanese: クイーン, Kuīn) are a much larger kind of Arachno with two abdomens instead of one, similar to Antol Kings.
The Cloud Arachno uses an Antol model, and was likely intended to be an Antol enemy.
Xenoblade Chronicles
Many species of Arachnos are in the Sound Category, meaning they attack if the party leader runs while nearby them. Some species can hatch from Pods. When Reyn and Shulk are in Tephra Cave, they comment on how it looks like they are Mechon parts inside the pods.
Story

In Tephra Cave, multiple Arachnos attack Shulk and Reyn a short while after the Spring of Grief. Shulk has a vision where Reyn is killed by the Arachno Queen. Reyn runs away from the Arachnos, only to end up on the Arachno Queen's Nest. Shulk's vision is then about to come true, but a new symbol appears on the Monado. Shulk learns the Monado art, Shield, which protects Reyn. A boss battle with the Arachno Queen and numerous Arachnos then commences.
Types of Arachnos
There are several high-level species of Arachnos found in Tephra Cave. Arachnos also can be found on Bionis' Leg, in Satorl Marsh, and on Valak Mountain. The most powerful Arachno is the Unique Firework Geldesia at level 98. It resides in Tephra Cave.
Normal Minor Enemies
- Admiral Arachno
- Director Arachno
- General Arachno
- Jada Arachno
- Jadals Arachno
- Leg Arachno
- Officer Arachno
- Panasowa Arachno
- Vilae Arachno
- Worker Arachno
Quest Exclusive Enemies
- Daughter Empress (during It Definitely Exist!)
- Deified Queen (during The Giants' Treasure)
- Devoted Arachno (during Clearing Obstructions)
- Greedy Arachno (during The Lost Pendant)
- Mythical Empress (during Legend of Mythical Empress)
- Resolute Arachno (during Clearing Obstructions)
- Zealous Arachno (during Clearing Obstructions)
Story Exclusive Enemies
Unique Monsters
Quest Exclusive Unique Monsters
- Dazzling Tolosnia (during The Blood of Bafalgar)
- Firework Geldesia (during Battling Brutes)
Boss
Future Connected
Normal Minor Enemies
Unique Monster
Xenoblade Chronicles 2
Normal Minor Enemies
- Empress Arachno
- Hool Arachno
- Nel Arachno
- Pawn Arachno
- Queen Arachno
- Regel Arachno
- Reggl Arachno
- Reener Arachno
- Rook Arachno
Quest Exclusive Enemy
- Maxos Arachno (DLC, during Shiny New Power)
Unique Monster
Boss
Quest Exclusive Bosses
- Nanda Arachno (During Go for it, Electra!)
- Ravenous Arachno (During The Ties That Bind)
Torna ~ The Golden Country
Quest Exclusive Enemy
- Cloud Arachno (During What Bars the Way)
Xenoblade Chronicles 3
Normal Minor Enemies
- Army Arachno
- General Arachno
- Gradya Arachno
- Pawn Arachno
- Queen Arachno
- Rook Arachno
- Soldier Arachno
- Worker Arachno
Quest Exclusive Enemies
- Dannagh Arachno (DLC, during Champion of the Nopon)
- Savant Arachno (during A Nopon's Counsel)
Unique Monsters
Quest Exclusive Bosses
- Drone Arachno
- Midona Arachno
- Princess Arachno (During A Nopon's Counsel)
Future Redeemed
Normal Minor Enemies
Etymology
- Arachno comes from Arachnid, the class of animals containing spiders.