Tempesto is the Ghouled version of the Tormato. It was the strongest and most powerful of the known Ghoul Slugs until the Goon Doc was introduced. This Ghoul was used to create the portal that caused Will Shane to disappear. It is Dr. Thaddius Blakk first and favourite ghoul.
- Protoform Abilities - Can blow dust in your eyes.
- Aerscythe - Stops in mid-air to blow a gale force wind, filled with stinging dust.
- Cyclovise - Can create a small cyclone around an opponent, sucking out oxygen until they pass out.
- Skyclone - Shot at the feet of an opponent- it begins spinning, then foe is sucked into a twister. This attack was used to make Will Shane and Nacho, disappear, presumably to the Deep Caverns
- Revector - Forms cyclone in front of user, cyclone "absorbs" attacks and throws them back at opponent.
- The World Beneath Our Feet Part 1 (First appearance)
- The World Beneath Our Feet Part 2
- The Trade
- The Unbeatable Master
- What Lies Beneath
- The Return
- Back to Blakk
- Bandoleer of Brothers
- Dark as Night
- Slugterra: Ghoul from Beyond
- Slugterra: Return of the Elementals
- Slugterra: Eastern Caverns
- Slugterra: Into the Shadows
- In the show, Tempestos are ebon-black whereas on the website they are dark crimson.
- Its name is derived from the word "tempest", which is a violent windstorm.
- A Tempesto's blackhole may lead to the Deep Caverns.
- Tempesto's blackhole only appears when it backfires.
- It was the first Ghoul introduced in the show, as well as the first Ghoul seen by both Will and Eli Shane.
- In velocimorph, they look like a vampire bat.