List of Classic Mode battles in Super Smash Bros. Ultimate

In Super Smash Bros. Ultimate Classic Mode, each character (except Miis) fights against a predefined set of fighters in predefined stages with their own boss battle at the end. Here is the list of battles encountered for each fighter's Classic Mode. Characters that are assigned either Master Hand or Crazy Hand for their boss battles will fight both bosses simultaneously at intensity levels 7.0 or higher, while characters with allies in their final stage will typically be assigned both Giant Hands outright regardless of intensity.

Mario

 * Name: Let's-a Go!
 * Theme: Most fighters are other Nintendo icons, with Koopalings and Bowser as the final fighters.
 * Unlockables: Sonic

Donkey Kong

 * Name: Journey to New Donk City
 * Theme: The first 2 fighters and stages are from the Donkey Kong series, while every other fighter has a stage relating to a city.
 * Unlockables:

Link

 * Name: A Quest to Seal the Darkness
 * Theme: All fighters have an 'evil', 'demon' or 'darkness' theme.
 * Unlockables:

Samus

 * Name: Another Planet, Another Bounty
 * Theme: All fighters are villains and/or monstrous in appearance, with R.O.B. referencing his species' antagonist role in The Subspace Emissary. All stages except the final boss are from the Metroid series.
 * Unlockables:

Dark Samus

 * Name: The Great Poison Given Form
 * Theme: Team Battles where the player is assisted by a (usually) heroic character from the same series as their opponent(s), using one of their dark palette swaps. This represents Dark Samus using Phazon to corrupt the character, turning them against their former allies.
 * Unlockables:

Yoshi

 * Name: Jurassic Journey
 * Theme: All fighters have a dinosaur or prehistoric theme.
 * Unlockables:

Kirby

 * Name: Gourmet Clash
 * Theme: All fighters are infamous for their gluttony or have 'eating' attacks. Food items spawn frequently.
 * Unlockables:

Fox

 * Name: Spaceborne Smash
 * Theme: All fighters are associated with space or other planets.
 * Unlockables:

Pikachu

 * Name: I Choose You!
 * Theme: All fighters are Pokemon.
 * Unlockables:

Luigi

 * Name: Luigi's Nightmares
 * Theme: All characters have a 'spooky' or undead theme.
 * Unlockables: Simon

Ness

 * Name: Home to Onett!
 * Theme: Represents Ness's journey in Earthbound in reverse, from Magicant to Onett.
 * Unlockables:

Captain Falcon

 * Name: Up Close and Personal
 * Theme: All fighters specialize in close combat or have no long-ranged attacks.
 * Unlockables:

Jigglypuff

 * Name: 64 All-Stars
 * Theme: All fighters are Veterans from Super Smash Bros.
 * Unlockables:

Peach

 * Name: No Damsel In Distress
 * Theme: All fighters are well-known for kidnapping other members of the roster in their home games.
 * Unlockables:

Daisy

 * Name: Sarasaland Represent!
 * Theme: All fighters are royal figures.
 * Unlockables:

Bowser

 * Name: The Red One. Every Red One!
 * Theme: All fighters are characters with red costumes.
 * Unlockables:

Ice Climbers

 * Name: Duos For Days!
 * Theme: Pairs of fighters known as close allies in their home series.
 * Unlockables:

Sheik

 * Name: Masquerade
 * Theme: All fighters conceal their faces with masks, helmets, shades, or by not having a face to begin with.
 * Unlockables:

Zelda

 * Name: Wisdom Prevails
 * Theme: All fighters are Villains generally portrayed as unintelligent, mindless, or insane.
 * Unlockables:

Dr. Mario

 * Name: Colorful Treatment Plan
 * Theme: Trios of fighters wearing Red, Blue, and Yellow costumes to represent the virus enemies from Dr. Mario (Fever, Chill, and Weird, respectively).
 * Unlockables:

Pichu

 * Name: Lightweight Fracas
 * Theme: All fighters are lightweights.
 * Unlockables:

Falco

 * Name: Soar Above the Darkness
 * Theme: All fighters are or represent dark counterparts of other characters.
 * Unlockables:

Marth

 * Name: A Kingdom of Dragons
 * Theme: All fighters are dragons or reptilians.
 * Unlockables:

Lucina

 * Name: A Path of Heroes
 * Theme: All fighters are from the Fire Emblem series.
 * Unlockables:

Young Link

 * Name: Hyrule Smash!
 * Theme: All fighters are from The Legend Of Zelda series.
 * Unlockables:

Ganondorf

 * Name: Encroaching Darkness
 * Theme: All fighters are Heroes from various series.
 * Unlockables:

Mewtwo

 * Name: Psychic Control
 * Theme: After the first round, one of the opponents will join the player as an ally in the following battle, with a theme from their series playing in the background. This represents Mewtwo using its psychic powers to brainwash its opponents into fighting alongside it for the next round.
 * Unlockables:

Roy

 * Name: A Journey of Swords
 * Theme: All fighters use swords as their primary weapon.
 * Unlockables:

Chrom

 * Name: Fight as One
 * Theme: After a one-on-one match against Lucina, all battles are Team Battles; Chrom's ally alternates between Lucina and either Male or Female Robin.
 * Unlockables:

Mr. Game & Watch

 * Name: A Long Legacy
 * Theme: All fighters are classic characters on retro stages, representing their earliest games.
 * Unlockables:

Meta Knight

 * Name: Two Sides of the Same Coin
 * Theme: All fighters appear in pairs, usually representing rivals or enemies of some sort. For example, Round 3 has one Captain Falcon in his normal palette and the other in his "Blood Falcon" palette.
 * Unlockables:

Pit

 * Name: Fighting for the Goddess
 * Theme: All fighters are based on the characters from Kid Icarus: Uprising.
 * Unlockables:

Dark Pit

 * Name: Created Warriors
 * Theme: All fighters are genetic clones. The penultimate battle is against Pit.
 * Unlockables:

Zero Suit Samus

 * Name: Grapplers! Whips! Claws!
 * Theme: All fighters are characters who use teether recoveries with their grapplers, whips, and claws.
 * Unlockables:

Wario

 * Name: I'm-a Gonna Win!
 * Theme: All fighters are those with brute strengths.
 * Unlockables:

Snake

 * Name: Weapons and Equipment OSP
 * Theme: All fighters use a variety of weapons and gadgets in battle. Guns and explosives spawn frequently.
 * Unlockables:

Ike

 * Name: The Black-Clad Warriors
 * Theme: All fighters are black or have dark colors.
 * Unlockables:

Pokémon Trainer

 * Name: Future Champion
 * Theme: All fighters are from the Pokemon series. The battles are structured to represent a player's journey through a Pokemon game; battling wild Pokemon to train their team, battling a fellow Trainer (possibly representing the Champion of the Pokemon League), and finally seeking out powerful Legendary Pokemon like Mewtwo.
 * Unlockables:

Diddy Kong

 * Name: Hey, Little Buddy!
 * Theme: All fighters are villains with "little buddies" of their own. The penultimate battle is against King K. Rool.
 * Unlockables:

Lucas

 * Name: Magic, Sacred Powers, and PSI!
 * Theme: All fighters have magical, mystical or psychic powers.
 * Unlockables:

Sonic

 * Name: At the Speed of Sound
 * Theme: All fighters represent a character and/or game from the Sonic the Hedgehog series.
 * Unlockables:

King Dedede

 * Name: Royal Rumble
 * Theme: All fighters are monarchs.
 * Unlockables:

Olimar

 * Name: Planetary Explorer
 * Theme: All fighters are those who are space travelers in their respective series. The penultimate battle is against Alph (or Olimar if the player is using Alph).
 * Unlockables:

Lucario

 * Name: Counter Encounters
 * Theme: All fighters have a Counter ability or move.
 * Unlockables:

R.O.B.

 * Name: Unreadable Expressions
 * Theme: All fighters have masks or appear to be expressionless or emotionless.
 * Unlockables:

Toon Link

 * Name: The Teamwork of Courage
 * Theme: All battles involve Toon Link teaming up with two other Toon Links, which may be a reference to The Legend of Zelda: Tri Force Heroes.
 * Unlockables:

Wolf

 * Name: Reunited Roster
 * Theme: All fighters were cut from previous Super Smash Bros. games.
 * Unlockables:

Villager

 * Name: Mistake to Underestimate
 * Theme: All fighters are small, cute, or are nonthreatening.
 * Unlockables:

Mega Man

 * Name: Variable Weapons System: Online!
 * Theme: All characters are references to Robot Masters and other bosses usually fought in a Mega Man game. Dr. Mario is a reference to Dr. Wily, and Mewtwo is a reference to the Alien that served as the final boss of Mega Man 2.
 * Unlockables:

Wii Fit Trainer

 * Name: Aerobic Smash
 * Theme: All fighters are overweight or physically unfit.
 * Unlockables:

Rosalina & Luma

 * Name: One Star After Another
 * Theme: All fighters are battled on different planets, representing Rosalina & Luma exploring the universe. The final two rounds represent the player teaming up with Mario to stop villains who threaten the safety of the cosmos (Bowser in Super Mario Galaxy, Marx in the Milky Way Wishes sub-game of Kirby Super Star and Kirby Super Star Ultra).
 * Unlockables:

Little Mac

 * Name: Friendly Sparring
 * Theme: All fighters are related to boxing or fighting.
 * Unlockables:

Greninja

 * Name: Your Turn, Greninja!
 * Theme: All fighters are characters that represent a certain type. All battles take place on Pokémon Stadium and Pokémon Stadium 2, except for the penultimate battle, which takes place on Kalos Pokémon League.
 * Unlockables:

Palutena

 * Name: A Little Divine Intervention
 * Theme: All battles alternate between characters who represent holiness and darkness.
 * Unlockables:

Pac-Man

 * Name: Ageless Classic
 * Theme: All fighters are 'retro' videogame characters.
 * Unlockables:

Robin

 * Name: Thunder and Flames
 * Theme: All fighters are characters who use fire and lightning attacks.
 * Unlockables:

Shulk

 * Name: Witness the Monando's Power
 * Theme: All fighters represent one of Shulk's Monado Arts and are fought in their cycling order in Super Smash Bros. 4. The penultimate battle is against Mega Man, who plays the role of Shulk's rival, Metal Face.
 * Unlockables:

Bowser Jr.

 * Name: Mama Peach, Where Are You?
 * Theme: All fighters are princesses, some of which are teamed up with their love interest (or in Lucina's case, her father). The penultimate battle is against Mario and Peach.
 * Unlockables:

Duck Hunt

 * Name: Dog, Duck, and Zapper
 * Theme: All fighters are animals.
 * Unlockables: Rathalos

Ryu

 * Name: Seeking a Challenge
 * Theme: All fighters are references to Street Fighter characters. Stamina Mode is always on, and all stages are in Omega form, increasing the resemblance to a Street Fighter game.
 * Unlockables:

Ken

 * Name: Red-Hot Rivalry
 * Theme: All fighters have a well-established rivalry with another fighter, culminating in a battle with Ken's own rival (Ryu).
 * Unlockables:

Cloud

 * Name: A Ride? Not Interested.
 * Theme: All battles take place on stages with vehicles and moving backgrounds.
 * Unlockables:

Corrin

 * Name: Between Black and White
 * Theme: All fighters are wearing white or black outfits, representing the Nohr and Hoshido families from Fire Emblem Fates. Additionally, several rounds involve Team Battles between the black and white characters, mirroring the Nohr-Hoshido conflict that Corrin finds themselves caught in the middle of.
 * Unlockables:

Bayonetta

 * Name: The Requiem of Fallen Wings
 * Theme: All fighters are angelic or have wings, with several implied to represent enemies fought in the Bayonetta series. The stages are organized in a way that implies an ascent from the demonic realm of Inferno to the angelic realm of Paradiso.
 * Unlockables:

Inkling

 * Name: An Inkredible Journey
 * Theme: All fighters have an alternative costume that matches the color of the stage they're fought on. The penultimate battle represents a Turf War from Splatoon, while the final boss has a rainbow motif (via its wings) to contrast the color motifs of the previous rounds.
 * Unlockables:

Ridley

 * Name: It Can't Be! Space Pirates!
 * Theme: All fighters are heroes fought on space-themed stages.
 * Unlockables:

Simon

 * Name: Smash-vania
 * Theme: All fighters are references to Castlevania characters.
 * Unlockables:

Richter

 * Name: Smash Echoes!
 * Theme: All fighters are Echo Fighters.
 * Unlockables:

King K. Rool

 * Name: Dangerous Heavyweight Fighters
 * Theme: All fighters are heavyweights.
 * Unlockables:

Isabelle

 * Name: Best in Show
 * Theme: All fighters are female.
 * Unlockables:

Incineroar

 * Name: Burning Pro Wrestling Spirit!
 * Theme: Battles are themed after professional wrestling matches, with most taking place on various forms of the Boxing Ring. The player is occasionally partnered with Greninja to represent a tag-team match.
 * Unlockables:

Piranha Plant

 * Name: N/A
 * Theme: N/A
 * Unlockables: N/A

Joker

 * Name: N/A
 * Theme: N/A
 * Unlockables: N/A