Shrek refers Mario to donkey as he can been seen pestering him sometimes and he asks him to get toilet paper when crapping, In Shrek's Big Crap, He asked donkey (Mario) to get him coke and he refused to give it to him and when he uses up toilet paper he blames Mario that he used it all up and he clogged the toilet
Shrek and Black Yoshi are seen to get along well and could be friends or in a creepy pansexual relationship. They often team up with each other (mostly to kill someone). In Skittle's Death, he and Black Yoshi both caused Skittles to die by killing him for eating their Cheesecake and McDonalds. In The Bird,Skittles, a rare extinct African Bird" that Woody adopted, ate Shrek's 's Cheesecake bale and messed with Black Yoshi's Call of Duty (which he does likes). This resulted in them teaming up to assassinate Extinct African bird , in which they succeed at doing so. But, the assassination backfires for them when the news reports that the zoo in which The Bird was kept was offering a $20,000 reward to who ever could bring her back alive. In Toad is Cool, he and Black Yoshi teamed up again, but to oppose Toad and Ray Cheesey through a rap battle.
Chef Pee Pee
When Mario refused to get Shrek some Cheesecake, Shrek asked Chef Pee Pee to make him some. Shrek is also seen calling Chef Pee Pee multiple other names such as "Chef Cock," "Chef Penis," and "Chef Peehole." Shrek tells the Chef that he will pay him $50.00 an hour to make him cheesecake. Chef Pee Pee agrees to do so and puts melted cheese on a Zebra Cake. Disappointed in Chef's work, Shrek decides to change Chef Pee Pee's job to wiping his ass after he takes a huge crap. Chef Pee Pee refuses the job opportunity and returns to working for Bowser.
"I think we need to call Guinness we got a new world record here!"
"Oh darn I dropped mah cheesecake!"
"HAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA I love reading my book while taking a crap!"
"DONKEY YOU CLOGGED THE TOILET!!!"
"Look what you did donkey!"
"Oh donkey I'm taking a crap!"
"WHERE ARE YOU GOING?!!!!!!! PLUNGE MY BUTTHOLE!!!!!!!!!!"
"I ned 2 taek a krap!"
"DARNeT!! Darnet, Downkay!"
"I'M WoNT ANewan TUCH MEh SHIF PINUS!!!!"
"MESTUR STINE DOWNKIY"
"Your mine now mushroom donkey!"
"ALRIGHT TOAD YOUR GONNA EAT MY CRAP FOR EATING MY CHEESECAKE!"
"Uh.. Mr. Stiendonkey, uh, this isn't a culinary cheesecake class?"
"I guess Toad wouldn't mind if I turn on the Blender!"
"THATS WHAT YOU GET FOR EATING MY CHEESECAKE!"
"Er because he ate my cheesecake donkey"
"I Well Nivor Et Meh Hat! I am haveng. . .vowse!"
Shrek calls Mario Donkey because "He Looks like a Donkey."
He also calls Black Yoshi "Black Donkey" and Toad "Mushroom Donkey".
He calls everyone "Weird names" except for Woody and Baby Shrek whom he calls "Junior".
He calls Chef Pee Pee different inappropriate names.
Shrek is the only character from Main Character Judging that is still in the show.
Shrek is the only known character to only eat and make supposed love to his favorite food, cheesecake.
Shrek believes he and Black Yoshi have the same skin colours but they don't but Shrek just loves him.
Shrek has been known to clog the toilet on more than one occasion and the resulting fallout ends up with a random character either dying or suffocating. Usually Toad is the victim.
Shrek is known to have a very short temper and this usually occurs when he doesn't get food or when someone disturbs him. This is noticeable in the SML short: The Bird when the bird Woody brings home eats Shreks Mc'Donalds and disturbs him when he is making love/ eating his Cheesecake in his room.
After eating the super hot shrimpo droppings, Shrek becomes a superhero known as Iron-Shrek but he refers to himself as Iron-Donkey.
Shrek believes his shorts mean good luck.
Toad ate Shrek's cheesecake in Toad's Mistake , where Shrek killed Toad by trying to cut him, putting him in the toilet, and by killing him in a blender.
He believes his butt is an ATM.
In the alternate dimension, he takes pees instead of craps, love sweet peas instead of cheesecake, and calls Mario "Camel" instead of "Donkey".
It is revealed in Shrek's Diet that he has an immunity to diabetes, and that he has Velveeta Cheese as his blood due to eating so much cheesecake.
When he's excited, he flaps his arms like a bird as if he was trying to fly.
It is revealed in Mario and Luigi's Stupid and Dumb Adventures Season 2 Episode 7 that he does not have a driver's license.
In Shrek's Diet it is revealed that Shrek should've had a week to live 3 years ago.