Mr. Guard and the Super Mario Bros. Super Show!

Based on both shows from 1989, here is a UK twist on this epic crossover.

The Guards of Shining Time Station UK

 * 1) Mr. Guard 1 (Ringo Starr)
 * 2) Mr. Guard 2 (Michael Angelis)

Super Mario Side

 * 1) Mario (Jeff Bennett)
 * 2) Luigi (Rob Paulsen)
 * 3) Princess Toadstool (Colleen O'Shaughnessey)
 * 4) Toad (Andrew Sabiston)
 * 5) Yoshi (Andrew Sabiston)
 * 6) Oogtar (Andrew Sabiston)
 * 7) King Koopa (Jim Cummings)
 * 8) Mouser (Maurice LaMarche)
 * 9) Triclyde (Billy West)
 * 10) Larry Cheatsy Koopa (Tom Kenny)
 * 11) Morton Big Mouth Koopa (Dorian Harewood)
 * 12) Wendy Kootie Pie Koopa (Tabitha St. Germain)
 * 13) Iggy Hop Koopa (Tara Strong)
 * 14) Roy Bully Koopa (Jason Marsden)
 * 15) Lemmy Hip Koopa (Tara Strong)
 * 16) Ludwig Kooky Von Koopa (Danny Cooksey)

Team Steven Spielberg

 * 1) Buster Bunny (Charlie Adler)
 * 2) Yakko Warner (Rob Paulsen)
 * 3) Felix the Cat (Charlie Adler)
 * 4) Freakazoid (Paul Rugg)

Team Rikochet

 * 1) Rikochet and El Rey (Carlos Alazraqui and Michael Donovan)
 * 2) Kevin Whitney and Krypto (Alberto Ghisi and Samuel Vincent)
 * 3) Al Smith (Tom Kenny)
 * 4) Shaggy Rogers and Scooby-Doo (Matthew Lillard and Frank Welker)

Team Ketchum

 * 1) Ash Ketchum and Pikachu (Sarah Natochenny and Ikue Ohtani)
 * 2) Mary and Togepi (Kerry Williams and Satomi Korogi)
 * 3) Tracey Sketchit (Craig Blair)
 * 4) Brock (Bill Rogers)

Team Hawkins

 * 1) Virgil Hawkins (Phil LaMarr)
 * 2) Osmosis Jones (Phil LaMarr)
 * 3) Jonny Quest (Jason Marsden)
 * 4) Omi (Tara Strong)

Team Avalon

 * 1) Sakura Avalon (Carly McKillip)
 * 2) Shareena Wickett (Tara Strong)
 * 3) Daemona (Jocelyn Loewen)
 * 4) Molly O! (Chantal Strand)

Team Sonic

 * 1) Sonic the Hedgehog (Jason Griffith)
 * 2) Amy Rose (Lisa Ortiz)
 * 3) Miles Tails Prower (Amy Palant)
 * 4) Knuckles the Echidna (Dan Green)

Team Turtles

 * 1) Leonardo (Michael Sinterniklaas)
 * 2) Raphael (Frank Frankson)
 * 3) Donatello (Sam Regal)
 * 4) Michelangelo (Wayne Grayson)

Team Pac

 * 1) Pac-Man (Scott McCord)
 * 2) Spiral (Samuel Vincent)
 * 3) Jason (Richard Ian Cox)
 * 4) Skeebo (Matt Hill)

Allies to King Koopa

 * 1) Hookbill Koopa (Jim Cummings)
 * 2) Naval Piranha (Cree Summer)
 * 3) Kamek and Kammy (Rob Paulsen and Kathleen Barr)

The Szyslak Leader and her Comrades

 * 1) Mel Szyslak (
 * 2) Meilin Rae (
 * 3) Mayuko Kiyokawa (
 * 4) Buzz O! (
 * 5) Yolanda Harrison (
 * 6) Malinda Doe (Jocelyn Loewen)
 * 7) Fanny Rogers (Cheryl Chase)
 * 8) Marina Barton (
 * 9) Samantha Benson (
 * 10) Wilhelmina Langley (

Pokemon Puzzle League Villains

 * 1) Jessie, James, Meowth and Wobbuffet (
 * 2) Cassidy and Butch (
 * 3) Giovanni (
 * 4) Dr. Namba (
 * 5) Damian (
 * 6) Alexander Davis (
 * 7) Koji (
 * 8) Ken and Mary (

Episodes

 * 1) The Bird! The Bird! / Neatness Counts - Thomas Stories: Thomas and Gordon and Edward and Gordon
 * 2) Butch Mario & the Luigi Kid / All Steamed Up -
 * 3) King Mario of Cramalot / Day of the Orphan
 * 4) Mario's Magic Carpet / Marianne and Luigeena
 * 5) Rolling Down the River / The Mario Monster Mash
 * 6) The Great Gladiator Gig / Bonkers from Yonkers
 * 7) Mario and the Beanstalk / Bats in the Basement
 * 8) Love 'Em and Leave 'Em / Will the Real Elvis Please Shut Up!
 * 9) The Great BMX Race / Mama Mia Mario
 * 10) Two Plumbers and a Baby / Lost Dog
 * 11) Stars in Their Eyes / Alligator Dundee
 * 12) Pirates of Koopa / Do You Believe In Magic?
 * 13) Robo Koopa / Captain Lou Is Missing
 * 14) Count Koopula / Magician
 * 15) Jungle Fever / Dance
 * 16) Mario of the Deep / Two Bums from Brooklyn
 * 17) The Fire of Hercufleas / The Marios Fight Back
 * 18) Mario Meets Koop-zilla / Fortune Teller
 * 19) Mario and Joliet / Fake Bro
 * 20) Too Hot to Handle / Time Out Luigi
 * 21) Brooklyn Bound / Cher's Poochie
 * 22) The Adventures of Sherlock Mario / Plumbers of the Year
 * 23) Hooded Robin and His Mario Men / Flower Power
 * 24) Toad Warriors / E.C. The Extra Creepy
 * 25) The Pied Koopa / Super Plant
 * 26) Bad Rap / Caught in a Draft
 * 27) On Her Majesty's Sewer Service / 9001: A Mario Odyssey
 * 28) Mario and the Red Baron Koopa / Gorilla My Dreams
 * 29) Mighty McMario and the Pot of Gold / Heart Throb
 * 30) Do You Princess Toadstool Take This Koopa...? / Mario Hillbillies
 * 31) The Mark of Zero / Toupee
 * 20,000 Koopas Under the Sea / Vampire Until Ready
 * 1) The Koopas Are Coming! The Koopas Are Coming! / Zenned Out Mario
 * 2) Koopenstein / Baby Mario Love
 * 3) Quest For Pizza / The Painting
 * 4) The Unzappables / George Washington Slept Here
 * 5) The Trojan Koopa / Texas Tea
 * 6) Karate Koopa / Adee Don't
 * 7) Elvin Lives / Home Radio
 * 8) Koopa Klaus / Little Marios
 * 9) The Ten Koopmandments / The Artist
 * 10) The Provolone Ranger / Goodbye Mr. Fish
 * 11) The Great Gold Coin Rush / Game Show Host
 * 12) Mario of The Apes / Chippie Chipmunks
 * 13) Crocodile Mario / Rowdy Roddy's Rotten Pipes
 * 14) Plummers Academy / Glasnuts
 * 15) Princess, I Shrunk the Mario Brothers / A Basement Divided
 * 16) Flatbush Koopa / Opera
 * 17) Raiders of the Lost Mushroom / Cyrano de Mario
 * 18) Star Koopa / Santa Claus Is Coming to Flatbush
 * 19) Escape from Koopatraz / French
 * 20) Little Red Riding Princess / No Way to Treat a Queenie

Trivia

 * A 52-episode crossover featuring Pikachu's Jukebox.
 * New voices will be for the Mario characters.
 * Andrew Sabiston, aside from Yoshi, will also voice Toad and Oogtar.