Slugterra·Disney XD
All episodes
5 seasons · 66 eps
Season 6
S6 · E1
22 min
S6 · E2
22 min
The New Boss (Into the Shadows Part 2) Episode 2
S6 · E3
22 min
Out of the Shadows (Into the Shadows Part 3) Episode 3
S6 · E4
22 min
Ghouls and Monsters (Into the Shadows Part 4) Episode 4
4 episodes in Season 6
Some details come from TheTVDB.