Piplup

Super Mario Bros. franchise
Mario | Luigi | Princess Peach | Princess Daisy | Bowser | Yoshi | Rosalina | Lumas | Captain Toad | Toadette | Pauline | Cappy | Paper Mario | Goombella | Dr. Mario | Mallow | Geno

Wario series
Wario | Waluigi | Ashley & Red | Mona | Kat & Ana

Donkey Kong series
Donkey Kong | Diddy Kong | Dixie Kong | Kiddy Kong | Tiny Kong | Lanky Kong | Chunky Kong | Funky Kong | Candy Kong | Cranky Kong

The Legend of Zelda series
Link | Princess Zelda | Sheik | Impa | Young Link | Toon Link | Tetra | Midna | Tingle | Lana | Linkle

Metroid series
Samus Aran | Zero Suit Samus | Rundas

Kid Icarus series
Pit | Palutena | Dark Pit | Magnus | Viridi | Phosphora

Star Fox series
Fox McCloud | Falco Lombardi | Slippy Toad | Peppy Hare | Krystal | James McCloud

Fire Emblem series
Anna | Marth | Caeda | Tiki | Celica | Roy | Lyndis | Hector | Ike | Chrom | Robin | Lucina | Owain | Lissa | Tharja | Corrin | Azura | Takumi | Camilla | Byleth | Edelgard von Hræsvelgr

Kirby series
Kirby | King Dedede | Meta Knight | Bandana Waddle Dee | Adeleine | Ribbon | Knuckle Joe | Magolor | Susie Haltmann

Pokémon franchise
Pichu | Pikachu | Charizard | Jigglypuff | Meowth | Ditto | Eevee | Mewtwo | Lugia | Blaziken | Gardevoir | Piplup | Lucario | Zekrom | Braixen | Greninja | Goomy | Decidueye | Incineroar | Vulpix (Alolan) | Lycanroc | Cynthia

Retro series
Sheriff | Bubbles | Ice Climbers | Little Mac | Duck Hunt | R.O.B. | Mr. Game and Watch | Sukapon | Excitebiker | Takamaru

Earthbound/MOTHER series
Ninten | Ana | Queen Mary | Ness | Paula Jones | Jeff Andonuts | Poo | Lucas | Claus | Flint | Hinawa | Kumatora | Duster | Boney

F-Zero series
Captain Falcon | Samurai Goroh | Jody Summer

Animal Crossing franchise
Villager | Isabelle

Pikmin series
Olimar | Pikmin | Louie | The President | Koppaites

Chibi-Robo series
Chibi-Robo

Custom Robo
Ray

Xenoblade series
Shulk | Fiora | Dunban | Riki | Reyn | Sharla | Elma | Rex | Pyra | Mythra | Tora | Zeke

Golden Sun series
Isaac | Jenna | Garet | Ivan | Mia | Felix | Matthew

Splatoon series
Inkling | Squid Sisters | Cap'n Cuttlefish | Off the Hook | Agent 3 | Agent 8

ARMS series
Spring Man | Ribbon Girl | Min Min | Ninjara | Twintelle | Master Mummy | Mechanica | Lola Pop | Max Brass

Main Characters:
Ash Ketchum | Pikachu | Misty | Brock | Tracey Sketchit | May | Max | Dawn | Iris | Cilan | Serena | Clemont | Bonnie | Kiawe | Lillie | Mallow | Sophocles | Lana | Jimmy | Go | Koharu

Allies:
Professor Samuel Oak | Gary Oak | Officer Jenny | Nurse Joy | Todd Snap | Ritchie | Casey | Sakura | Drew | Steven Stone | Sanda | Zoey | Kenny | Barry | Looker | Riley | Lyra | Khoury | Professor Aurea Juniper | Trip | Bianca | Virgil | Georgia | N | Anthea and Concordia | Alexa | Professor Sycamore | Sawyer | Alain | Aria | Tierno | Shauna | Trevor | Clembot | Sanpei | Professor Kukui | Gladion

Relatives: Delia Ketchum | The Sensational Sisters | Flint | Norman | Caroline | Johanna | Chili | Cress | Grace | Meyer | Lusamine | Gladion

Gym Leaders: Brock | Misty | Erika | Jasmine | Clair | Norman | Maylene | Fantina | Falkner | Candice | Cilan | Iris | Viola | Grant | Korrina | Ramos | Clemont | Valerie | Olympia | Wulfric

Elite Four: Bruno | Lance

Champions: Cynthia | Diantha

Movie Characters: Meoldy | Maren | Diana | Towa | Bianca | Kidd Summers | Sir Aaron | Rafe | Jack Walker | Lizabeth | Alice | Maury

Pokemon: Mewtwo | Mew | Lugia | Ho-Oh | Entei | Celebi | Latias | Latios | Jirachi | Deoxys | Giratina | Darkrai | Azlef | Mesprit | Uxie | Shaymin | Arceus | Victini | Zekrom | Reshiram | Kyurem | Keldeo | Meloetta | Diancie | Zygarde | Pichu | Pichu Brothers | Team Go-Getters | Team Poképals

Main Pokémon: Bulbasaur | Charizard | Squirtle | Butterfree | Totodile | Noctowl | Heracross | Sceptile | Infernape | Buizel | Snivy | Greninja | Goodra | Psyduck | Vulpix | Scyther | Blaziken | Beautifly | Skitty | Piplup | Buneary | Pachirisu | Ambipom | Axew | Excadrill | Dragonite | Pansage | Sylveon | Chespin | Bunnelby | Dedenne | Luxray | Turtonator | Togedemaru | Snowy | Sparky

Game Characters: Red | Blue Oak | Ethan | Brendan | Nate | Rosa | Calem | Sun | Moon | Hau | Gloria | Keith | Kate | Summer | Murph

Teams
Team Plasma (Rood | Colress)
Team Flare (Malva)
Cipher (Ein | Eldes)

Playable Heroes
Banjo & Kazooie | Bayonetta | Bowser | Captain Falcon | Chrom | Cloud Strife | Corrin | Dark Pit | Diddy Kong | Donkey Kong | Dr. Mario | Duck Hunt | Eight | Erdrick | Falco Lombardi | Fox McCloud | Greninja | Ice Climbers | Ike | Incineroar | Inkling | Isabelle | Jigglypuff | Joker | Ken Masters | King Dedede | Kirby | Link | Little Mac | Lucario | Lucas | Lucina | Luigi | Luminary | Mario | Marth | Mega Man | Meta Knight | Mewtwo | Mii | Mr. Game and Watch | Ness | Olimar (Alph) & Pikmin | Pac-Man | Palutena | Pichu | Pikachu | Pit | Pokémon Trainer (Red | Leaf) (Charizard | Ivysaur | Squirtle) | Princess Daisy | Princess Peach | Princess Zelda | Richter Belmont | R.O.B. | Robin | Rosalina & Luma | Roy | Ryu | Samus Aran | Sheik | Shulk | Simon Belmont | Solid Snake | Solo | Sonic the Hedgehog | Terry Bogard | Toon Link | Villager | Wario | Wii Fit Trainer | Yoshi | Young Link | Zero Suit Samus

Assist Trophies
Alucard | Akira | Ashley | Chef Kawasaki | Dillon | Elec Man | Gray Fox | Guile | Isaac | Isabelle | Jeff | Jill | Kat & Ana | Knuckle Joe | Knuckles the Echidna | Krystal | Little Mac | Lyn | Magnus | Midna | Phosphora | Ray MK III | Riki | Rodin | Saki Amamiya | Samurai Goroh | Shadow the Hedgehog | Sheriff | Shovel Knight | Spring Man | Squid Sisters | Starfy | Sukapon | Takamaru | Tiki | Tingle | Waluigi | White Bomberman | Yuri Kozukata | Zero

Pokémon
Arceus | Alolan Raichu | Alolan Vulpix | Blastoise | Celebi | Chansey | Charizard | Chespin | Darkrai | Dedenne | Deoxys | Ditto | Eevee | Entei | Fennekin | Gardevoir | Giratina | Ho-Oh | Inkay | Kyogre | Kyurem | Latias and Latios | Lugia | Marill | Meloetta | Meowth | Metagross | Mew | Munchlax | Oshawott | Palkia | Piplup | Snivy | Snorlax | Tapu Koko | Vulpix | Zoroark

Others
5-Volt | Bass | Beat | Blue Toad | Boney | Bottles | Cappy | Centurions | Cresselia | Dialga | Doc Louis | Dunban | Fiora | F.L.U.D.D. | Hal "Otacon" Emmerich | Ho-Oh | Jinjos | Krystal | Kumatora | Master Hand | Mega Man Series (Mega Man X | Mega Man Volnutt | Mega Man.EXE | Mega Man Star Force) | Mei Ling | Metal Mario | Mumbo Jumbo | Paula | Pauline | Peppy Hare | Pikmin | Poo | Proto Man | Registeel | Reshiram | Roy Campbell | Rush | Slippy Toad | The Mighty Jinjonator | Toad | Tom Nook | Tooty | Viridi | Yoshis (Blue Yoshi | Light Blue Yoshi | Yellow Yoshi | Pink Yoshi | Purple Yoshi | Red Yoshi) | Zekrom