Slugterra: Into the Shadows is a 2016 English-language Action Adventure motion picture. So when Tad and his slug Pieper-who have just arrived from the Surface-lend a hand with Pieper's amazing powers, Eli welcomes a new team member. Slugterra: into the shadows stars Shannon Chan-kent in the lead role along with an ensemble cast including Ian James Corlett, Trevor Devall, Brian Drummond, Andrew Francis, Mark Oliver and Adrian Petriw. So when Tad and his slug Pieper-who have just arrived from the Surface-lend a hand with Pieper's amazing powers, Eli welcomes a new team member.