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Season guide

Slugterra: Season 4

4 episodes Premiered Oct 4, 2016 Updated Sep 22, 2026

Slugterra Season 4 continues the overarching saga across 4 episodes.

Previously on Slugterra

Season 4 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • Picks up essential narrative continuity directly following the events of Slugterra Season 3.
  • Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
  • Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
  • Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.

Season overview

Slugterra Season 4 continues the overarching saga across 4 episodes.

Season 4 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 4 Progress Shield

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Binge Efficiency Engine

Season 4: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

75%
25%
Mytharc (3): Crucial lore & season climaxes
Core (1): Character development & subplots
Side Quest (0): Standalone / filler
S4·E1 Mytharc

Into the Shadows: Back on the Shane Gang (1)

Oct 4, 2016

As the Shane Gang returns to the 99 caverns from their Eastern adventure, they find Gateway Cavern overrun with slugs. In the Shane Gang's absence, the Shadow Clan took a different

S4·E2 Mytharc

Into the Shadows: The New Boss (2)

Oct 11, 2016

The Shane Gang takes Tad under their wing, training him to become a great slugslinger with Eli's old blaster. Their training is put to the test when the Gang brings Tad to answer a

S4·E3 Core

Into the Shadows: Out of the Shadows (3)

Oct 18, 2016

Tad is missing after the slug-out with the Shadow Clan, so the Gang sets off without him to investigate reports of slugs disappearing. The mystery deepens as the trail of slugs lea

S4·E4 Mytharc

Into the Shadows: Ghouls and Monsters (4)

Oct 25, 2016

Tad's hypnotic slug Pieper has gone megamorph, his gang of supporters all have Gattler blasters and Tad's control over his new ghouls is stronger than Dr. Blakk's ever was. The Sha