Slugterra (2012)

An epic sci-fi comedy adventure, Slugterra stars 15-year-old Eli Shane, who strives to follow the same path as his father did before his premature death. Eli and his crew of friends travel to subterranean Slugterra, where slugs can transform into powerful magical beasts--and the evil Dr. Blakk is trying to convert them into mindless weapons! Until now, nobody has been able to confront Dr. Blakk and become a true Slugslinging hero. But Eli’s arrival could change everything.

Slugterra is an action show featuring Sam Vincent and created by Asaph Fipke.

Slugterra is currently streaming for free (ad-supported) on Freevee, Pluto TV and The Roku Channel and it's also available on Hoopla.

It is also possible to buy Slugterra on Apple TV and Vudu.