Koopenstein (S01E26)

S01E01 The Bird! The Bird! S01E02 King Mario of Cramalot S01E03 Butch Mario & the Luigi Kid S01E04 Mario's Magic Carpet S01E05 The Ringer S01E06 Rolling Down the River S01E07 The Great Gladiator Gig S01E08 Mario and the Beanstalk S01E09 Love 'Em and Leave 'Em S01E10 Cold Spells S01E11 The Great BMX Race S01E12 Stars in Their Eyes S01E13 Jungle Fever S01E14 Brooklyn Bound S01E15 The White Knight S01E16 Toad Warriors S01E17 The Fire of Hercufleas S01E18 Count Koopula S01E19 Pirates of Koopa S01E20 Kiss 'N Tell S01E21 Two Plumbers and a Baby S01E22 The Adventures of Sherlock Mario S01E23 Do You Princess Toadstool Take This Koopa...? S01E24 The Pied Koopa S01E25 Sing for the Unicorn S01E26 Koopenstein S01E27 On Her Majesty's Sewer Service S01E28 Mario and Joliet S01E29 Too Hot to Handle S01E30 That Sinking Feeling S01E31 Hooded Robin and His Mario Men S01E32 20,000 Koopas Under the Sea S01E33 Mighty McMario and the Pot of Gold S01E34 Mario Meets Koop-zilla S01E35 Doppelganger S01E36 Koopa Klaus S01E37 Mario and the Red Baron Koopa S01E38 The Unzappables S01E39 Bad Rap S01E40 Underworld Connections S01E41 The Mark of Zero S01E42 The Ten Koopmandments S01E43 The Koopas Are Coming! The Koopas Are Coming! S01E44 The Trojan Koopa S01E45 Stinging a Stinger S01E46 Quest For Pizza S01E47 The Great Gold Coin Rush S01E48 Elvin Lives S01E49 Plumbers Academy S01E50 Hitch in the Works S01E51 Karate Koopa S01E52 Mario of the Apes