The Emperor Strikes Back is the fifty-eighth episode of Slugterra and the twelfth episode of season three.
The Emperor sets to work creating Unstoppable Warriors to reclaim the Eastern Caverns. To make things even more difficult, a bounty is placed on Junjie's head, sending the Dai-Fu and hordes of the Emperor's Underlords after the Shane Gang.
- Eli Shane
- Beatrice Sting
- Kord Zane
- The Emperor
- Old Man
- Unstoppable Warriors
- Jonny Man
- Underlord Sleade
- Flower (Cameo)
- The Eastern Caverns
- The Deep Caverns (Mentioned only)
- This is the first time we see Swick working for the Shane Gang.
- A Megamorph Fandango is seen in this episode.
- This is the first time a Fandango is used in battle as Eli shoots Burpy and his Fandango Charger, and Charger used Levelest on Burpy to charge him up so he can try to defeat the Iron Warrior.
- A Ghouled Fandango (Vamparo) debut in this episode.
- Disney XD Asia cuts out the scene when Swick says "Nimrod", similar to "The Tournament of the Underlords".
- The ending scene in "The Lady and the Sword" is shown in the beginning of this episode.
- The Dai-Fu retrieves the Emperor's sword blaster from Pronto in "The Lady and the Sword".
- The thieves in The Industrial Cavern from "Get Pronto", and Yarry, Morv and Oogleby from "Slug Day" return.
- The combo move of a Frostcrawler and a Tormato that creates a frozen tornado is similar to the one Eli did in "The Tournament of the Underlords".
- The title looks like a reference to the movie Star Wars Episode V: The Empire Strikes Back.