Mii Fighter Costumes

In Super Smash Bros. for Nintendo 3DS and Wii U, Mii Fighters are able to be customized with different outfits. The following is a list of different hats and outfits a Mii Fighter can equip. The games will also include DLC hats and outfits.

Mii Brawler Outfits

 * Biker Gear
 * Fighter Uniform
 * Mecha Suit
 * Protective Gear
 * Standard Outfit
 * Tracksuit
 * Vampire Outfit
 * Smash T-Shirt
 * Smash Hoodie
 * Business Suit
 * Bionic Armor
 * Akira Yuki Costume (Virtua Fighter)
 * Jacky Bryant Costume (Virtua Fighter)
 * Heihachi Mishima Costume (Tekken)
 * Flying Man Costume (EarthBound)
 * King K. Rool Costume (Donkey Kong)
 * Captain Falcon Costume (F-Zero)
 * Toad Costume (Super Mario Bros.)
 * Knuckles Costume (Sonic The Hedgehog)

Mii Swordsman Outfits

 * Cybernetic Suit
 * Neon Suit
 * Ninja Outfit
 * Pirate Outfit
 * Plate Armor
 * Samurai Armor
 * Standard Outfit
 * Smash T-Shirt
 * Cat Suit
 * Smash Hoodie
 * Business Suit
 * Link Costume (The Legend of Zelda)
 * Dunban Costume (Xenoblade Chronicles)
 * Zero Costume (Mega Man)
 * Lloyd Irving Costume (Tales of Symphonia)
 * Chrom Costume (Fire Emblem)
 * Black Knight Costume (Fire Emblem)
 * Hunter Mail (Monster Hunter)
 * Rathalos Armor (Monster Hunter)
 * Viridi Costume (Kid Icarus)
 * Gil Costume (Tower of Druaga)
 * Ashley Costume (WarioWare, Inc.)
 * Takamaru Costume (The Mysterious Murasame Castle)

Mii Gunner Outfits

 * High-Tech Armor
 * Wild West Wear
 * Fancy Suit
 * Steampunk Outfit
 * Dragon Armor
 * Mage Outfit
 * Smash T-Shirt
 * Bear Suit
 * Smash Hoodie
 * Business Suit
 * X Costume (Mega Man)
 * Proto Man Costume (Mega Man)
 * Isabelle Costume (Animal Crossing)
 * Inkling Costume (Splatoon)
 * MegaMan.EXE Costume (Mega Man)
 * K.K. Slider Costume (Animal Crossing)
 * Samus Aran Costume (Metroid)
 * Fox McCloud Costume (Star Fox)
 * Geno Costume (Super Mario Bros.)
 * Tails Costume (Sonic The Hedgehog)

Downloadable Outfits
Currently, six downloadable bundles have been released. Each costume can be purchased separately, costing $0.75 for one version and $1.15 for both versions, with the exception of K.K. Slider, which is free with Patch Update 1.1.0.

Bundle 1
Bundle 1 was released on April 15, 2015, costing $6.00 for one version of the game and $9.20 for both.

Bundle 2
Bundle 2 was released on June 14, 2015, costing $6.00 for one version and $9.20 for both.

Bundle 3
Bundle 3 was released on July 31, 2015, costing $6.00 for one version and $9.20 for both.

Bundle 4
Bundle 4 was released on September 30, 2015, costing $5.25 for one version and $8.05 for both.

Bundle 5
Bundle 5 was released on December 15, 2015, costing $1.50 for one version and $2.30 for both versions.

Bundle 6
Bundle 6 was released on February 3, 2016, costing $4.50 for one version and $6.90 for both versions.

Trivia

 * The store image for the Akira outfit features a Mii Brawler battling a Metal Wii Fit Trainer. Her metal appearance here is a reference to Dural, the final boss of every single Virtua Fighter game to date (with Dural's appearance always being that of a metallic woman).
 * Ryu's reveal trailer ends with him clashing with a Brawler dressed in the Heihachi outfit, referencing the earlier crossover fighting game Street Fighter X Tekken. Mega Man and Pac-Man were also playable in that game, abelit with Mega Man in a more comical form and Pac-Man riding a hollowed out Mokujin.
 * The store page for the Lloyd outfit features a shot of a Mii performing the Chakram special move while wearing the outfit, referencing Lloyd's close friend Colette, who also fought with Chakram as both slashing and throwing weapons. Another shot shows a Lloyd Mii with brown eyes standing next to another Mii dressed in the full Lloyd set but with blue eyes. The blue-eyed Lloyd Mii may be a reference to Decus from the sequel Tales of Symphonia: Dawn of the New World, who disguised himself as Lloyd, and had blue eyes in his undisguised form.