The Mario Brothers, Princess Toadstool, and Toad go on various adventures while battling the evil King Koopa.
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| Title | Name |
|---|---|
| Season 1, Episode 1 | The Bird! The Bird! |
| Season 1, Episode 2 | King Mario of Cramalot |
| Season 1, Episode 3 | Butch Mario & the Luigi Kid |
| Season 1, Episode 4 | Mario's Magic Carpet |
| Season 1, Episode 6 | Rolling Down the River |
| Season 1, Episode 7 | The Great Gladiator Gig |
| Season 1, Episode 8 | Mario and the Beanstalk |
| Season 1, Episode 9 | Love 'Em and Leave 'Em |
| Season 1, Episode 11 | The Great BMX Race |
| Season 1, Episode 12 | Stars in Their Eyes |
| Season 1, Episode 13 | Jungle Fever |
| Season 1, Episode 14 | Brooklyn Bound |
| Season 1, Episode 16 | Toad Warriors |
| Season 1, Episode 17 | The Fire of Hercufleas |
| Season 1, Episode 18 | Count Koopula |
| Season 1, Episode 19 | Pirates of Koopa |
| Season 1, Episode 21 | Two Plumbers and a Baby |
| Season 1, Episode 22 | The Adventures of Sherlock Mario |
| Season 1, Episode 23 | Do You Princess Toadstool Take This Koopa...? |
| Season 1, Episode 24 | The Pied Koopa |
| Season 1, Episode 5 | The Ringer |
| Season 1, Episode 15 | The White Knight |
| Season 1, Episode 20 | Kiss'N Tell |
| Season 1, Episode 10 | Cold Spells |