If I were to tell you there's an animated show out there that's pretty much Pokémon, but instead of the monsters being kept in little pokéballs, the trainers fight each other with these powerful slugs that they use as ammo in combat, most people wouldn't believe a single ounce of what I said.
Not only was this show brought to life by Nerd Corps - the same studio known for producing other such shows like Storm Hawks - but it also was created by the same guy, Asaph Fipke. He, along with Chuck Johnson, formed Nerd Corps back in 2002 and had made quite a few animated shows after the years they had spent working as producers for Mainframe Studios.
But the similarities with Storm Hawks don't stop there! While that show's story takes place in the sky-based world known as Atmos, this show does the opposite with the world of Slugterra being centered deep inside the Earth's core. Our main protagonist, Eli Shane, is voiced by Samuel Vincent, who also provided the voices for Aerrow and Dark Ace in SH.
Like its predecessor, this show really does stand out with its worldbuilding, visuals, cast of characters, and the designs of the slugs. I often find Nerd Corps shows to be underrated and this series is no exception. If you haven't seen it, I'd say its definitely worth watching.
This is one of those few Canadian shows that has a rather grounded story and better dialogue than most of the other ones I've seen. Almost like a more mature version of the Pokémon series.