"Listen up, you reptile retches! It’s time to play 'Auction the Princess'!" -The Super Mario Bros. Super Show, "Karate Koopa"
"I'm rich! I'm filthy, stinkin', mouth-watering rich!" -The Super Mario Bros. Super Show, "Pirates of Koopa"
"Fire a warning shot! ...On second thought, blow the plumber-boys and the Princess right off the boat!" -The Super Mario Bros. Super Show, "Pirates of Koopa"
"These fireballs are fantastic! Think of the destruction; think of the wreckage; think of how much this'll lower my heating bill!" -The Super Mario Bros. Super Show, "Great Balls of Fire"
"I'll have to lead the next attack myself!" -The Super Mario Bros. Super Show, "The Bird! The Bird!"
Toad is reunited with his estranged grandfather. Mario sniffles
Are you crying because he found his long-last grandfather?
No, that Toad will look like that in fifty years.
Mario Brothers are dining with Princess Peach
PPeach
There is something I need from you two.
Peach pulls handle of vase, which makes table drop down into a secret location. They are greeted by a man in a suit with a British accent
MMan
Welcome gentlemen, I am Agent N.
I see.
NAgent N
No, not C, N! I am the head of Princess Peach's Secret Service and have selected you gentlemen to save James Blond and stop Koopfinger from his plans in robbing Fort Hardknocks.
Oh!
NAgent N
No, I am N! Agent O is on holiday.
From Neatness Counts/The Bird! The Bird!
Well at last you two powder-puffs did something right.
FFlurry
Thank you, your extremest, most royal and regal Koopaness.
Watch it soldier. When I want my feet licked, I'll ask for it! [beat] I want my feet licked. [the flurries starts licking King Koopa's soles quickly]
Princess Toadstool
"No, it's magic! If you can reach it, you can become a Super Mario, and get special fire power that can destroy King Koopa's evil helpers!" -The Super Mario Bros. Super Show, "The Bird! The Bird!"
"There! That's the last of those grimy green good-for-nothings!" -The Super Mario Bros. Super Show, "King Mario of Cramalot"
Toad
"Who did you expect? Pee-wee Herman?" -The Super Mario Bros. Super Show, "Rolling Down the River"
"Relax, Sal, you know what dey say: 'Old plumbers never fry'!" -The Super Mario Bros. Super Show, "Brooklyn Bound"
"Da things I do for Princess Toadstool!" -The Super Mario Bros. Super Show, "Count Koopula"
Miscellaneous characters
"If they can do it, so can I--I mean, you!" ~Mouser -The Super Mario Bros. Super Show, "Butch Mario and the Luigi Kid"
"No, you can't call your lawyer or your mother!" ~Koopa Troopa -The Super Mario Bros. Super Show, "Toad Warriors"
These quotes come from Wikiquote's The Super Mario Bros. Super Show! pages and are available under the Creative Commons Attribution-ShareAlike License.