Due to the chaos wreaked by Taurus Bulba with the Ramrod, the Staff of Sarcanas found its way into the world of Steven Universe and with it, the resurrection of the Storm King thanks to some leftover Gem technology getting caught in the storm it created. After encountering Aquamarine & Eyeball, the three villains decide to team up along with General Lunaris & Adagio Dazzle to all get revenge; forcing the heroes of Beach City, Duckburg and Equestria to team up to save their worlds.
 
Meanwhile, Gladstone Gander, Fethry Duck and Shining Armor hang out in the “Not Invited to the Adventure” corner.
 
Steven Universe Pair Units
 
Steven and Connie  
Garnet and Amethyst  
Pearl and Bismuth  
Peridot and Lapis Lazuli  
Jasper and Spinel  
Greg and Lion
 
Ducktales Pair Units
 
Scrooge and Donald  
Huey and Louie  
Dewey and Webby  
Launchpad and Mrs. Beakley  
Lena and Violet  
Gyro and Fenton
 
My Little Pony Pair Units
 
Twilight Sparkle and Starlight Glimmer  
Rainbow Dash and Fluttershy  
Pinkie Pie and Applejack  
Rarity and Fluttershy  
Trixie and Discord  
Celestia and Luna
 
Crossover Units
 
Lars and Della  
Penumbra and Tempest Shadow  
Ember and Topaz  
Nephrite and Darkwing Duck  
Boyd and Thorax  
Cadence and Sadie
 
Solo Units
 
Yellow Diamond  
Blue Diamond  
White Diamond  
Rhodonite  
Fluorite  
Padparadscha Sapphire  
Rutile  
Cactus Steven  
Duckworth  
Goldie O’Gilt  
Storkules  
Faris D’jinn  
Gabby McStabberson  
José Carioca  
Panchito Pistoles  
Gosalyn Waddlemeyer  
Cutie Mark Crusaders  
Sandbar  
Yona  
Ocellus  
Silverstream  
Gallus  
Smolder  
Sunset Shimmer