This is 'All-Verses Champions' with Jay-Jay as the main protagonist
Crossovers:
Cartoons and Adult Cartoons: Ninjago, Camp Lazlo, The Oblongs, Arthur, Miraculous: Tales of Ladybug and Cat Noir, My Gym Partner's a Monkey, Ren and Stimpy, Clarence, We Bare Bears, Shaun the Sheep, Freakazoid, King of the Hill, Pinky and the Brain, Alvin and the Chipmunks, Captain Planet and the Planeteers, Magic School Bus, Where on Earth Is Carmen Sandiego, Mighty Max, SWAT Kids: The Radical Squadron, Mighty Ducks: The Animated Series, 2 Stupid Dogs, Troll Hunters, Rocko's Modern Life, Dan Vs., She-Ra and the Princesses of Power, Doug, Voltron, Twelve Forever, Ever After High, F is for Family, Daria, Welcome to the Wayne, Over the Garden Wall, The Awesomes, The Tick, Robot and Monster, Squidbillies, The Berenstain Bears, Braceface, TallSpin, The Pirates of Dark Water, The Smurfs, Silverhawks, Mask, Inspector Gadget, Popeye the Sailor, Carebears, Pink Panther, Yogi Bear, C.O.P.S., Hong Kong Phooey, Space Ghost, Bionic Six, The Great Grape Ape Show, The Addams Family, Earthworm Jim, Bonkers, Richie Rich, Wild Cats, Fish Police
Anime/Manga: How Heavy Are your Dumbells You lift, Vagabond, Kingdom, Jujutsu Kaisen, Kengan Asura, Magical Senpai, The Helpful fox Senko-San, The Quintessential Quintuplets, Uzaki-Chan Wants to Hangout, Rent-a-Girlfriend, Domestic Girlfriend, Kishuku Gskkou no Juliet, My Stepmom's Daughter is My Ex, Mirai Nikki, The Promised Neverland, Kakegurui: Compulsive Gambler, Log Horizon, Mushoku Tensei, The Ambition of Nobuna Oda, The Saint Magic is Omnipotent, Accel World, Gate, Neon Genesis Evangelion, Violet Evergarden, Hai to Gensou no Grimgar, Komi Can't Communicate, Shimoneta: A Boring World Where the Concept of Dirty Jokes Doesn't Exist, Clannad, Prison School, Haganai, K-On!, Chainsaw Man, Seikon no Qwaser, Kissxsis, Manyu Hiken-Cho, Omamori Himari, Nyan Koi!, B Gata H Kei, Recently, My Sister is Unusual, Why the Hell are You Here Teacher!?, Love Tyrant, My Monster Secret, Haven't You Heard? I'm Sakamoto, FLCL, Carole & Tuesday, Cannon Busters, Michiko to Hitchin, Basquash!, Erased, Burst Angel, Dragon's Dogma, Cardcaptor Sakura, Deadman Wonderland, Brave 10, Guyver 10, Re: Creators, Cross Ange, Dog Days, Izetta: The Little Witch, Zatch Bell!, Shaman King, Rage of Bahamut, Eureka Seven, Vampire Hunter-D, Inari, Konkon, Koi Iroha, Witch Craft Works, Golden Time, The Pet Girl of Sakurasou, Saekano: How to Raise a Boring Girlfriend, Ore wo Suki Nano wa Omae Dake ka yo, Oreimo, Kokoro Connect, Kaifuku Jutsushi no Yarinaoshi, Monster Girl Doctor, A Silent Voice, Your Name, Midnight Occult Civil Servants, Takunomi, The Demon Girl Next Door, Blend S, Gabriel Dropout, School Rumble, Kampfer, Heavy Object, Shindou Yuusha to Maid Oneesan
Manhwa: The Evil Lady's Hero, Cheerful Countess Sisters, I Failed To Throw The Villain Away, How To Stop The Tyrant's Blackening, I Became the Wife of a Tragedy's Main Lead, Bona Sort, Touch My Little Brother and You're Dead, The Max Level Princess is Bored Today as Well, I Am The Sorcerer King, Finding Camellia, Reborn as Scholar, The Eldest Daughter Walks Down The Flower Path, Mookhyang: Dark Lady, Return To Player, History of Three States, As the Moon Wanes, Villainesses Have More Fun, False Confession, Trigger (Bulmanitnyang), Beatrice, Rescue System, The Hero Returns, Royal Marriage, Adelaide, Green Boy: Shouting to You!, Sica Wolf, Dimensional Mercenary, Your Eternal Lies, Annoying Alice, Solo Glitch Player, Is This Warrior Real?, The Great Mage Returns After 4000 Years, The Hero Returns, Swimming Lessons for a Mermaid, Two Steps Away, I Fell into a Reverse Harem Game!, I Failed to Oust the Villain, Call of the Spear, King of Fire Dragon, Marry You? Yes, I Will!, Springtime for Blossom, My In-Laws Are Obsessed With Me, The Problem of My Love Affair, Happily Ever Afterwards, Killing Time, Forget My Husband, I'll Go Make Money, My Secretly Hot Husband, The Big Apple, Reincarnated as an Unruly Heir, One More Try!, I Raised a Black Dragon, Chitra, Lady Envoy
Manhua: Eternal Life, Detective VLOG, Beautiful Legends, Spring is the Date, The Portal of Wonderland, Legend of Star General, Wild Lillies and Violets, Lunatic's Ugly Girl, Spare Me, Great Lord!, Berserk Sovereign of Battle, Supreme Exocirist, Throne of the Dragon King, Blood and Steel, Monster Pet Evolution, Welcome to the Nightmare Games, The First Sword of Earth, Retired Heroes, Man From Hell, The Descent of the Spiritual Deity, Let Me Game in Peace, It's Hard to Mix in with the Demons, Cases of Judge Zhang, The Prince's Hungry, Pretending to Be the Strongest Beneath the Heavens, Your Abilities are Mine, My World Legion of Doom, Stop Summoning Me!, How to Charm Your Dragon, Reborn: House of Revenge, Child of Light, Abnormal Hunting, Prefectural Circle of Friends, Beware of Demons, Hotel Temptation, The Ex, Dragon King Awakening, My Delightful Boyfriend, Tale of Dragon Morph, Spicy Wife's Reborn World, Unemotional Man vs Enthuistiac Girl, Versatile Mage, Inverse Scale, Black Queen, Dark Money, I, the Invincible Villain With My Apprentices, Doctor & Daughter, Dawn Empire, Kungfu Beauty, The Villainess Enters the Game!, I Don't Want a Harem!, Dragon Tamer, Ability Stealing Hunter, A Comic Artist's Survival Guide, Loveless Contract, The Foodie Next Door, King of the Night Market, Kill Dragon, The Daily Life of the Immortal King
Comic Books: Vampirella, Sin City, Xena: Warrior Princess, Army of Darkness, Irredeemable, Kick-Ass
Video Games: Dead Space, Yakuza, Genshin Impact, Wolfenstein, Destiny, World of Warcraft, Max Payne, Mad Max, Killer Instinct, Crash Bandicoot, Dishonored, Arcana Heart, Sakura Wars, Touhou Project, The Idolmaster, The Last of Us, Genji, Dying Light, Warhammer, The Division, Zombie Army Dead War, Shenmue, The Outer Worlds, Blair Witch, Outlast, Greedfall, Control, Diablo, The Surge, Darksiders, Bloodstained: Ritual of the Night, Alan Wake, Vallkyria Chronicles, Shin Megami Tensei, Disgaea, Labyrinth of Refrain: Coven of Dusk
Tv shows: Criminal Minds, The Middle, Supernatural, Teen Wolf, Shameless, Victorious, iCarly, Henry Danger, Good Luck Charlie, The Haves and the Have Nots, Better Call Saul, Family Matters, Bella & the Bulldogs, A.N.T. Farm, Wizards of Waverly Place, Smart Guy, Best Friends Whenever, Drake & Josh, The Haunted Hathaways, That so Raven
Movies: Home Alone, Blood and Bone, 6 Underground, The Equalizer, The Hitman's Bodyguard, Monsters vs Aliens, Men in Black, Spy Kids, Machete, Cloudy of a Chance of Meatballs, Triple 9, Die Hard, All About the Benjamins, Taken, Shaft, Coffee & Kareem, Ride Along, Cradle 2 the Grave, Undisrupted, Ninja Assassin, The Croods, Step Brothers, The Hangover, Let's Be Cops, Fist Fight, ZooKeeper, Spenser Confidential, South Central, Training Day, Poetic Justice, Lottery Ticket, Barbershop, Are We There Yet?, City of God, Hustle & Flow, Grown-Ups, The Adventures of Sharkboy and Lavagirl, Hancock, Set it Off, New Jack City, Lockdown, Top Gun
Creepypasta and Urban Legends: Dr. Smiley, Play With Me, NoEnd House, The Expressionless, Russian Sleep Experiment, Siren Head, Hanako-San, Black Volga, Bunny Man