I know there is a similar idea to a fic called Final Frontier Federation but I already started planning this before I remembered about the premise of that.
The space station known as the Forge and inside there was a wrestling arena only instead of an arena it was showing various video screens of fans across the world across the Multiverse. In the wrestling ring is TOM 6 with SARA v4 nearby.
"Hello everyone, wrestling fans of all shapes, sizes and ages. I am TOM here with my lifelong co-pilot SARA and you may all know me as the host of Toonami. Here at my current residence at the Forge we have discovered a time space anomaly allowing us to travel and retrieve individuals from across the Multiverse." TOM explained to the cameras before he took a moment to take that in. "Faced with this tremendous discovery, I have made the logical and rational decision in... Starting my own wrestling company with various individual from different worlds in the Multiverse. Mostly video games, anime, cartoons and maybe a little comics. This is the Multiversal Wrestling United or MWU for short. I shall be acting as Owner and Chairman, making all the important decisions and SARA shall act as my second in command as well as serving as the ring announcer as well as a backstage interviewer." TOM said leaving before allowing SARA to continue on.
"We have assembled various superstars and tag teams to compete along with our female wrestling division known as the Starlets Division, they will all be competing for Championships." SARA said as Tom took over.
"I must say that we have some lovely ladies in the Starlets Division and so let us know if you would be up for some fanservice type matches." TOM said as SARA shook her head. "Anyway our weekly episodic show will be known as ShutDown and we will have a commentary team ready. Four episodes of ShutDown shall lead to our special Pay Per View events with the first known as WrestleFest where we shall crown our first MWU Champion as well as the first Tag Team, All-Star & Starlets Champions. Our first 2 ShutDown episodes will have their main events be 8 superstar battle royals with the winners going on to fight in the main event to determine our first MWU Champion!" TOM explained.
"We will also see our 6 tag teams go at it to qualify for a triple threat tag team ladder match at Wrestlefest to determine the Tag Team Champions plus qualification matches for a fatal fourway match for the MWU Starlets Championship." SARA explained.
"What of our secondary championship the All-Star Championship? Well that is for you to find out when you tune in for the first ShutDown episode, I promise you all that there will be surprises from here on out when MWU debuts officially on the first MWU ShutDown." TOM said.
"We will both be here and we hope to see you there when the date arrives." SARA said.
"To close on out; here is a look at our roster list as well as a glimpse of our list of PPVS plus some match types that you will only ever see here on MWU. Thank you for this and once again, I hope to see you all again real soon." TOM said as they both waved to the cameras.
Roster
Asta (Black Clover): Haruka Mirai by Kankaku Piero
Bang (Space Jam): Hit Em High (The Monstars' Anthem)
Blitzo (Helluva Boss): Intermediate Murder Professionals song
Boomstick (Death Battle): Invader by Jim Johnston
Chazz Princeton (Yugioh GX): Yugioh GX theme
Deku (My Hero Academia): the Day by Miura Jam
Gorgeous Godfrey (the Simpsons): Narcissist by Jim Johnston
Hagar the Horrible (Hagar the Horrible): War by CFO$
Haseo (.Hack): Gentle Hands (English) by Tomoyo Mitani
Invincible (Invincible): Broken Boy by Cage the Elephant
Jaden Yuki (Yugioh GX): Yugioh GX theme
Jet Black (Cowboy Bebop): Tank! By Seatbelts
Kazuma Kiryu (Yakuza): Receive You [Reborn] by Koshi Inaba
Kid Muscle (Ultimate Muscle): Ultimate Muscle theme
Leo (Fire Emblem): A Dark Fall from Fire Emblem Fates
Moxxie (Helluva Boss): Intermediate Murder Professionals song
Peacemaker (DC Comics): Medal by Jim Johnston
Pound (Space Jam): Hit Em High (The Monstars' Anthem)
Reno (Final Fantasy): Turks theme by Nobuo Uematsu
Rude (Final Fantasy): Turks theme by Nobuo Uematsu
Sonic (Sonic the Hedgehog): It Doesn't Matter by Tony Harnell
Sterling Archer (Archer): Danger Zone by Cherlene
Sweet Tooth (Twisted Metal): Twisted Metal 2 theme
Terry Kenyon (Ultimate Muscle): Ultimate Muscle theme
Travis Touchdown (No More Heroes): No More Heroes main theme
Wario (Super Mario Bros): Starring Wario
Wiz (Death Battle): Invader by Jim Johnston
Xander (Fire Emblem): A Dark Fall from Fire Emblem Fates
Starlets (Womens division) Roster
Daisy (Super Mario Bros): Need a Little Time by Lillian Garcia
Edelgard (Fire Emblem): The Edge of Dawn by Buttercup
Jade (Mortal Kombat): All the Things She Said by tAtu
Millie (Helluva Boss): Oh Millie by Parry Gripp
Neopolitan (RWBY): One Thing by Casey Lee Williams
Samus Aran (Metroid): Theme of Samus Aran, Space Warrior
Tina Armstrong (Dead or Alive): Hardcore Country by Mickie James
Twilight Sparkle (My Little Pony: Friendship is Magic): My Little Pony Friends by Kaylee Johnston
Tag Teams & Factions
IMP (Blitzo, Moxxie & Millie)
Monstars (Pound & Bang)
Muscle League (Kid Muscle & Terry Kenyon)
Nohr Royal Family (Xander & Leo)
Slifer Slackers (Jaden Yuki & Chazz Princeton)
Turks (Reno & Rude)
Pay Per Views
WrestleFest (shall serve as our top main PPV)
Payback
Bloodthirst
King of the Mountain (a one night tournament will take place to determine who will get a MWU Championship match at the next PPV)
Death Warrant
Jackpot (gimmick is that there is a 8 person Jackpot ladder match for a guaranteed future MWU Championship match in the next year)
Maximum Impact
Starstruck
Survival Brawl (a 40 superstar Rumble match to determine who will get a MWU Championship match at the next PPV)
Checkmate
Fallen from Grace
Home Stretch
Exclusive Match Types
Airlock Match (this match can go through the station except for the sections only available to main staff; the winner is the first superstar to send their opponent through one of the Forge's airlocks)
Low-Gravity Match (a normal match but the gravity precautions in the wrestling arena will be turned off and you can pin a superstar on the walls and the ceiling)
Cage of Hell Match (a spiked wire cage match where the only way to win is by KO)