User:Nintendo101/mulch
Ice Climber
Popo & Nana
The Ice Climbers are a pair consisting of a boy named Popo and a girl named Nana, who originate from the NES game Ice Climber. Though they have only had one single game of their own, aside from the modified VS. UniSystem arcade conversion VS. Ice Climber, they have made frequent crossover appearances in other Nintendo games, including Game & Watch Gallery 4, WarioWare: Twisted!, WarioWare: Touched!, Tetris DS, a mention in Game & Watch Gallery 3, and another appearance in NES Remix. Both Ice Climbers are playable fighters in Super Smash Bros. Melee, Super Smash Bros. Brawl, and Super Smash Bros. Ultimate.
VS. System flyer
In a flyer advertising a number of games for the VS. System, Mario wears the outfits of characters that appear in each of them. One of them shows him wearing a red Ice Climber outfit.
WarioWare series
Popo makes a number of appearances in the WarioWare series in microgames based on Ice Climber. The player controls Popo in the Ice Climber microgame in WarioWare, Inc.: Mega Microgame$! and WarioWare Gold, the Ice Climber microgame in WarioWare: Twisted!, and the Ice Climbers microgame in WarioWare: D.I.Y. In WarioWare: Touched!, Popo appears as the sprite in the third level of 8-Bit Hero. In WarioWare: Get It Together!, he makes a cameo in the Ice Climber microgame, where he is seen hanging onto the condor.
Super Mario Maker
The Ice Climbers appear as one of the add-on Mystery Mushroom costumes that are unlocked after completing an Event Course titled "Popo & Nana's Climbing Challenge" in Super Mario Maker. Their animations and sound effects are taken directly from their original game.
EarthBound
Ness
Ness is a young boy from Onett and the main protagonist of EarthBound (Mother 2: Gyiyg no Gyakushū in Japan). Starting off as a normal young boy, Ness ends up on a journey to save the world from Giygas's alien army. He also develops psychic powers, known as PSI, during the course of the game. Ness is often pictured with a baseball bat, which is the first weapon acquired in EarthBound. Throughout the Super Smash Bros. series, Ness was voiced by Makiko Ohmoto, who also voices Kirby. Ness's name is an anagram of "SNES", the shorthand term for the Super Nintendo Entertainment System, on which EarthBound was released (however, it is also like "NES" as in the Nintendo Entertainment System).
Yoshi's Woolly World / Poochy & Yoshi's Woolly World
A Yoshi design based on Ness can be unlocked in Yoshi's Woolly World and Poochy & Yoshi's Woolly World when players scan a Ness amiibo in.
Super Mario Maker
Ness makes a cameo appearance in Super Mario Maker as an unlockable amiibo costume for Costume Mario. Mario's 8-bit sprite takes the appearance of Ness, and his sound effects change to ones from EarthBound: when acquired, the PSI healing sound effect plays. Clearing the stage plays the boss victory theme. When falling into a pit, the sound effect of Ness's party being defeated from that game plays, and pressing 
on the controller makes the jingle for learning a new technique play. The costume is unlocked either randomly upon completion of 100 Mario Challenge on Normal difficulty or higher, or by scanning a Ness amiibo.
F-ZERO
Captain Falcon
Captain Falcon is the main character from the F-Zero series. He is an F-Zero racer and a secret bounty hunter, with a mysterious past. Throughout the Super Smash Bros. series, Captain Falcon is known for his blend of speed and power, as well as his various signature moves, such as the Falcon Punch and Knee Smash. In addition, the Male Wire Frame and Red Alloy are modeled after Captain Falcon, having some of the exact same attacks and similar idle poses. In the Super Smash Bros. series, Captain Falcon is voiced by Ryo Horikawa, speaking English with a false American accent.
Club Nintendo comics
Captain Falcon makes a cameo appearance in "Super Mario: Im Rausch der Geschwindigkeit". When Mario and Yoshi are speeding down the road to rebel against the new speed limit law, one panel shows them speeding past Captain Falcon in the Blue Falcon.
Super Mario RPG: Legend of the Seven Stars
While Captain Falcon himself does not appear in Super Mario RPG: Legend of the Seven Stars, a model of the Blue Falcon appears in Hinopio's shop.
Mario Kart 8 / Mario Kart 8 Deluxe
Though Captain Falcon does not directly appear in Mario Kart 8 and Mario Kart 8 Deluxe, his amiibo is compatible with the game, allowing the player to customize their Miis with a Captain Falcon-themed outfit if the player is to connect the Captain Falcon amiibo to the GamePad. Other elements from the F-Zero series appear in the game in the The Legend of Zelda × Mario Kart 8 and Animal Crossing × Mario Kart 8 DLC packs; Captain Falcon's trademark Blue Falcon and F-Zero themed tracks named Mute City and Big Blue respectively, which even features F-Zero music. Artwork of Captain Falcon from F-Zero X also appears on large television screens around Mute City, along with his signature quote, "Show me your moves!"
Super Mario Maker
Captain Falcon appears in Super Mario Maker as a Mystery Mushroom costume, using sound effects from the original SNES F-Zero. It can randomly be unlocked after completing the 100 Mario Challenge on Normal or harder, or unlocked by scanning the Captain Falcon amiibo.
Pokémon
Pikachu
Pikachu is an Electric-type Pokémon and the mascot of the popular Pokémon series made by Game Freak. Pikachu has made some video game appearances alongside Mario, most notably in the Super Smash Bros. series, in which it is a default playable character in every installment. In the Pokémon series, Pikachu is the evolved form of Pichu and evolves into Raichu. Pikachu is voiced by Ikue Ohtani in the Super Smash Bros. series. She also voices Pikachu in the Pokémon anime, as well as several mainline games (first in Pokémon Yellow Version: Special Pikachu Edition) and various spin-offs.
Pikachu is the only playable Pokémon in the Super Smash Bros. series to have a gender difference. Female Pikachu have a heart-shaped dent at the end of their tail, while the Pikachu in the Super Smash Bros. series does not except in two of its alternate costumes in Ultimate, which implies that the Pikachu in Smash is male. However, this distinction was not introduced in the Pokémon games until Pokémon Diamond and Pearl.
Mario Artist: Paint Studio
Artwork of Pikachu from Pokémon Red and Green versions can be used as a stamp in Mario Artist: Paint Studio.
Super Mario Maker
Pikachu appears as a Costume Mario costume in Super Mario Maker, obtainable by collecting a Mystery Mushroom. The Pikachu costume is unlocked after the player either scans a Pikachu amiibo or completes the 100 Mario Challenge on Normal difficulty or higher.
Mario + Rabbids Kingdom Battle
A piece of concept art for Mario + Rabbids Kingdom Battle shows the Genius Girl wearing a Pikachu lapel pin.
A "Mario Pikachu" merchandise promotion was announced for Japan featuring Pikachu dressed as Mario and Luigi. Official artwork also features other Pokémon standing in for Super Mario characters, such as Diancie for Peach and Blastoise for Bowser. The whole artwork is also a parody of the original Super Mario Bros. box art.
Jigglypuff
Jigglypuff is a Normal/Fairy-type Pokémon (a pure Normal-type Pokémon prior to the Fairy type's introduction in Generation VI) from the Pokémon series. Its first appearance was in the Japanese Pokémon Red and Pokémon Green, which later became the international Pokémon Red Version and Pokémon Blue Version. Classified as the Balloon Pokémon, Jigglypuff evolves from Igglybuff and into Wigglytuff.
Mario Artist: Paint Studio
Artwork of Jigglypuff from Pokémon Red Version and Pokémon Green Version can be used as a stamp in Mario Artist: Paint Studio.
Super Mario Maker
Jigglypuff appears as one of the Costume Mario costumes in Super Mario Maker, which can be unlocked either by using the Jigglypuff amiibo or by clearing 100 Mario Challenge on Normal difficulty or greater. Its sprite is based upon the overworld sprite used in the Nintendo DS Pokémon games. Like the other Smash for 3DS/Wii U-based Pokémon costumes, Jigglypuff does not have any altered sound effects.
