In the Sonic continuity, some games allow a person's Mii to participate in the game instead of the default characters. In other Sonic games, Miis can act as an icon for the player's save file, so the player doesn't get them mixed up with others.
Sonic games featuring Miis
Mario & Sonic at the Olympic Games seriesMiis can be used in any Olympic event. All Miis wear the same athletic outfit, but in different colors depending on the Mii's color. All the Miis share the same animation and poses with Mario. The announcer refers to every Mii as simply "Mii" rather than their unique names. The Miis themselves are completely silent, having absolutely no lines whatsoever. Their stats are all five out of ten.
There is a lot more to do with the player's Mii in the later games than there was in their predecessor. In Mario & Sonic at the Olympic Winter Games, using the earned star tokens, players can purchase many different styles of shoes, gloves, shirts and head gear for their Miis to wear which will change the stats. In addition, players can obtain full costumes of the characters from both Sonic and Mario series to dress their Mii in. Similarly, in Mario & Sonic at the London 2012 Olympic Games Mii clothes and outfits can be won using Scratchers or purchased for ten blank scratchers. Miis all have the same stats, and they have the same moveset as Mario by default. However, if a Miis outfit is customized with a character suit or certain gear, their stats will increase. They still have no speaking lines. Despite the character's gender, they can be in any outfit, such as a male character wearing the Rouge costume or a dress. The costumes also appear in Mario & Sonic at the Sochi 2014 Olympic Winter Games and Mario & Sonic at the Rio 2016 Olympic Games.
Mii Sonic Costumes
|Suit||How to get it in Olympic Winter Games||How to get it in London 2012 Olympic Games||How to get it in Sochi 2014 Olympic Games||How to get it in Rio 2016 Olympic Games||Image|
|Sonic the Hedgehog||Earn 5 gold medals with Sonic then purchase in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Complete the last area in Legends Showdown.||Complete Sonic's Carnival Challenge|
|Miles "Tails" Prower||Earn 5 gold medals with Tails then purchase in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Perform 8 perfect combination moves in Figure Skating Pairs (2 players only).||Complete Tails' Carnival Challenge|
|Knuckles the Echidna||Earn 5 gold medals with Knuckles then purchase in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Play an event 100 times.||Complete Knuckles' Carnival Challenge|
|Dr. Eggman||Earn 5 gold medals with Dr. Eggman then purchase in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Perform a perfect landing at least 6 times in a single Roller Coaster Bobsleigh race.||Complete Eggman's Carnival Challenge|
|Amy Rose||Earn 5 gold medals with Amy then purchase in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Ride the boost line for a total 30 seconds in a single Skeleton match.||Complete Amy's Carnival Challenge|
|Shadow the Hedgehog||Earn 5 gold medals with Shadow then purchase in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Get at least 20 perfects in a row in a single Speed Skating 500m race.||Complete Shadow's Carnival Challenge|
|Vector the Crocodile||Earn 5 gold medals with Vector then purchase in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Get a perfect at least 14 times in a single Snowboard Slopestyle match.||Complete Vector's Carnival Challenge|
|Blaze the Cat||Earn 5 gold medals with Blaze then purchase in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Set a lap time of under 11.5 seconds for at least three laps in a single Short Track Speed Skating 1000m match.||Complete Blaze's Carnival Challenge|
|Silver the Hedgehog||Earn 5 gold medals with Silver then purchase in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Get over 90% perfects in a single Figure Skating Singles match.||Complete Silver's Carnival Challenge|
|Metal Sonic||Earn 5 gold medals with Metal Sonic then purchase in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Perform at least 9 tricks in a single Freestyle Skiing match.||Complete Metal Sonic's Carnival Challenge|
|Super Sonic||Win it randomly in lottery.||Come in first place in 50 times in events then receive it as a gift from Espio in the mail.||Play events over 200 times.||Use the Sonic amiibo and beat the Sonic League|
|Big the Cat||Receive a letter from Big then find him in the dream event he specifies in the letter (press (-) when you see him.) Then purchase costume in boutique.||Play game for 3 straight hours then receive as a gift from Charmy in the mail.|
|Charmy Bee||Purchase the Gold Shopping Card from the Secret Store. Purchase costume in boutique.||Play for an hour then receive as a gift from Charmy in the mail.|
|Espio the Chameleon||Purchase the Black Shopping Card from the Secret Store. Purchase costume in boutique.||Come in first in events 10 times then receive as a gift from Espio in the mail.||Perform a flag boost at least 12 times in a single Snowboard Parallel Giant Slalom match.|
|Rouge the Bat||Defeat Rouge in Individual or Team Festival Mode: Figure Skating. Then purchase costume in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Complete Rouge's Carnival Challenge|
|E-123 Omega||Defeat Omega in Individual Festival Mode: Speed Skating OR Team Festival Mode: Short Track Relay. Then purchase costume in boutique.||Win from a scratcher or purchase for 10 blank scratchers.||Get a perfect balance rate at least 60% in a single Snowboard Slopestyle match.|
|Jet the Hawk||N/A||Win from a scratcher or purchase for 10 blank scratchers.||Complete Jet's Carnival Challenge|
|Wave the Swallow||N/A||Win from a scratcher or purchase for 10 blank scratchers.||Complete Wave's Carnival Challenge|
|Storm the Albatross||N/A||Win from a scratcher or purchase for 10 blank scratchers.|
|Emerl||N/A||Win from a scratcher or purchase for 10 blank scratchers.||Take over 15 shots at the goal in a single Ice Hockey match.|
|Egg Pawn||N/A||Win from a scratcher or purchase for 10 blank scratchers.||Perform a jump with maximum revolutions in Figure Skating Singles.|
|Cream the Rabbit||N/A||Come in first in London Party games 10 times then receive as a gift from Cream in the mail.||Score at least 2 goals in the first and last period in a single Snow Day Street Hockey match.|
|Sonic the Werehog||N/A||Come in first in events 25 times then receive as a gift from Espio in the mail.||Score 4 points in one end of Curling.|
|Chip||N/A||Play game for 5 straight hours then receive as a gift from Charmy in the mail.||Get a gold medal in the 16 Olympic Events.|
|Marine the Raccoon||N/A||Come in first 50 times in London Party bonus games then receive as a gift from Cream in the mail.||Get a total distance of over 10,000m in Ski Jumping Large Hill.|
|Tikal||N/A||Come in first 100 times in London Party bonus games then receive as a gift from Cream in the mail.||N/A|
|Sticks the Badger||N/A||N/A||N/A||Complete Sticks' Carnival Challenge|
|Zavok||N/A||N/A||N/A||Complete Zavok's Carnival Challenge|
|Zazz||N/A||N/A||N/A||Complete Zazz's Carnival Challenge|
Mii Mario Costumes
- Princess Peach
- Princess Daisy
- Bowser Jr.
- Donkey Kong
- Bee Mario
- Fire Mario
- Dry Bones
- Dry Bowser
- Diddy Kong
- Bee Mario (London 2012)
- Fire Mario (London 2012)
- Penguin Mario (London 2012)
- Propeller Mario (London 2012)
- Toad (London 2012)
- Ludwig Von Koopa (London 2012)
- Wendy O. Koopa (London 2012)
- Larry Koopa (London 2012)
- Iggy Koopa (London 2012)
- Morton Koopa Jr. (London 2012)
- Roy Koopa (London 2012)
- Lemmy Koopa (London 2012)
- Rosalina (Rio 2016)
- Nabbit (Rio 2016)
- Lakitu (Rio 2016)
- Gold Mario (Rio 2016)
Other Mii costumes
- Wenlock (London 2012)
- The Hare (Sochi 2014)
- Vinicius (Rio 2016)
Sonic & Sega All-Stars Racing
Miis can race in the Wii version of Sonic & Sega All-Stars Racing. Miis drive the Super Zoomer and its All-Star Move is the Parade Power where four Miis pick up your car and start running, knocking out anybody in the way.
Miis are playable in the co-op feature of Sonic Colors. In the Game Land zone, they can use all of Sonic's/Virtual Hedgehog's powers and can use the Wisps powers. Their appearance is the same as the selected Mii, same head and arm shape but with Sonic's upper body and shoes. The voice when selected a color Wisp remains the same. Same as with Virtual Hedgehog, should one jump on the Mii's head, he/she will become dazed. A Mii can also be the icon on the player's saved file.
Sonic & All-Stars Racing Transformed
Miis return in the Wii U and 3DS versions of Sonic & All-Stars Racing Transformed. They drive the Super Zoomer which is modeled after the logo from the Sega arcade game OutRun, except with the paint job of the Mii's favorite color. Miis are unlocked in the Wii U version by completing the first GP circuit on any difficulty, which also unlocks the mirror GP circuit.
For the 3DS they are unlocked by clearing all Mirror GPs. In the Wii U version the player is restricted to their personal Mii while in the 3DS version the player can pick from any Mii on the console and from some Quest Miis. In Download Play on the 3DS the Miis are used by the players receiving the game.
In this Nintendo game that guest stars Sonic the Hedgehog as a playable character, the player can use their Mii on Wi-Fi to represent themselves. Miis also appear as audience members in some stages, like Mario Circuit and Pokémon Stadium 2.
Samba de Amigo (Wii)
In this maraca shaking musical game, Sonic and some Chao make very energetic dancing cameos in a Green Hill Zone themed stage. Also present in Green Hill Zone are the player's Miis who are more than happy to join in on the party.
Miis make a cameo in Sonic Generations (3DS) as a Profile Card. They can also be seen through StreetPass. They also appear as Wi-Fi icons.
Sonic the Hedgehog returns as a playable character, the player can have their Mii (known as Mii Fighter in the game) partake as a playable character with the choice of three weapons that goes with fighting styles. A sword, a blaster or combat gloves. Costumes based on Tails and Knuckles appear as downloadable outfits for Mii Brawler and Mii Gunner respectively.
- A Mii's hands are round spheres, but in the Mario & Sonic at the Olympic Games series, Miis have opposable thumbs.
- Miis physical appearance has been known to vary, in Wii Sports Miis (in most cases) had no legs, but in Wii Sports Resort they have legs. In Wii Sports (in most cases) they had no arms, but in Sonic & Sega All-Stars Racing, they have arms.
- Although players can customize the weight and height of your Mii, all Miis in Sonic games will have the same height and weight regardless.
- If the player selects their Mii as a favorite in the Mii Channel, not only will they have red pants but in Mario & Sonic at the Olympic Games part of the Miis outfit would be red as well (i.e. wrist bands)
- It is possible that Miis could have super-human speed and strength, considering they compete on an even level with the other default characters in the Mario & Sonic series.
- It is possible the Parade Power is based on "Mii Parade" considering that they make a type of parade during their All-Star move.
- The Miis can be made to look like Sonic characters to some extent, as well as most non-Sonic characters, giving you chances to "play as" some out-of-game-characters (like Mario or Link), often offering comedic results. The Avatars also do this to a lesser extent.