A/N: This is a developmental eight-part mega anime crossover story that I would make in the future, based on Super Smash Bros. Ultimate. I DON'T OWN ANYTHING. Enjoy.

Update 1: Added five new characters to the roundup.

Update 2: Added one character.

Update 3: Rearranged a couple characters. Added two final characters (for now), but I will reveal several more inclusions later on.

Update 4: Changed names on Final Super-Attacks.

Prelude
CAST w/h Final Mega-Attacks

Ryuko Matoi (Senketsu Kisaragi Finale)
Sinon (Sniper-Bow Alicizating Longshot)
Kirito Kirigaya (Black Swordsman)
Artoria Pendragon (EXCALIBUR!)
Medusa (BREAKER GORGON!)
Zero Two (Golden Strelizia)
Ruby Rose (Crescent Rose)
Aqua (Purifying Waterstorm (w/h Eris and Iris))
Saitama (One Punch Man)
Mako Mankanshoku (Two-Star Uniform Delinquent)
Satsuki Kuryuin (Junketsu Dusk)
Tomoyo Kanzaki (Closed Clock Dusk)
Ragyo Kuryuin (Ultimate Shinja-Koketsu)
Aikuro Mikisugi (DTR!)
Luluco (Triggered Space Patrol)
Nui Harime/Ira Gamagoori/Uzu Sanageyama/Nonon Jakuzure/Houka Inumuta/Rei Hoomaru/Tsumugu Kinigase/Shiro Iori (Elite Upgrade)
Barazo Mankanshoku (Mankanshoku-Man: Guerilla)
Asuna Yuuki (Hyper Sleeping Knight)
Shinnosuke Nomura (Action-Mask)
Eren Yeager (Titan Eren Rush)
Leafa (Blades of Alfheim)
Philia (Razorsharp Dance)
Klein (The Extreme Reaver)
Llenn (Operation Overdrive)
Yuna (Operation Soundwave)
Rin Tohsaka (A Saber in Shining Armor)
Nagisa Shiota (Koro-Sensei and the Serpent)
Karma Akabane (Devilish Bullet Mark)
Kaede Kayano (Mega Tentacle Strike)
Pina Co Lada (Direct Hit)
Rory Mercury (Direct Hit)
Lelei La Lalena (Magic Staff)
Tuka Luna Marceau/Yao Haa Dushi (Pair-Up (with Shino Kuribayashi))
Ram and Rem (Twin Power: Oni's Wrath)
Illyasviel and Chloe von Einsbern (Magic Kaleidostick Posse)
Yang Xiao Long (Yang Rush)
Blake Belladonna and Weiss Schnee (Monochrome Illusion)
Amanda O'Neill (Shiny Rod)
Diana Cavendish (Shiny Rod)
Akko Kagari (Shiny Rod and the Shooting Star)
Julian Chase/Miranda Worth and Ichigo (Quadriple Mech Finish)
Kokoro (Genista's Barrage Storm)
Miku (Argentea)
Ikuno (Chlorophytum 2.0)
9'a (Alpha Strike)
Doraemon (Super Guided Gadget Laser Beam)
Monkey D. Luffy/Nami/Roronoa Zoro/Brook/Usopp/Nico Robin/Sanji/Franky (Straw Hat Pirates)
Yuuri/Chito (Catastrophe)
Chitoge Kirisaki/Tsugumi Seishiro (Beehive)
Lux Arcadia (Drag Knight Harem Attack)
Katsuhira Agata (Kiznaiver Finale)
Aoi Sakurai (Covering Fire)
Naruto (Send in the Clones)
Neko (Strain Legends)
Goku (ULTRA Super Saiyan!)
Hiro (True Strelizia Apath)
Darkness (Sharpening Swordstorm (w/h Megumin and Kazuto))
Hamilton Co Lada (Direct Hit)
Shino Kuribayashi (Awakening Fistfight)
Izuku Midoriya (One For All/All for One)
Ochako Uraraka (Zero Gravity/Meteor Shower)
Meliodas (Demonic Justice)
Panache Fure Kalgi/Bozes Co Palesti (Rose of Thorns)
Maria (Powerful Witch Climax)
Haru Soramachi/Makoto Mitsurugi/Ruby Azumi (Full Blast/Final Edge/Omega Blitz)
Koizuka Koyume/Tsubasa Katsuki/Kaoruko Moeta/Ruki Irokawa (Bringing Comic-to-Life)
Mordred (Rebellious Fury)
Astolfo (Casseur de Logistille)
Jeanne D'Arc (La Pucelle)
Alice Zuberg (Underworld Dragon Curse)
Tony Tony Chopper (Devil Fruit Pirate)
Cameron MacCloud (Unauthorized Universal Ultimatum)

The story will begin in the next chapter...