All Species Wiki
Team Sonic Racing Chao.png
General Information
Universe Sonic the Hedgehog
Aliases Neutral Chao
Chicka Monkeys (during real life development)
Classification Chao chao
Species Type Chao
Homeworld Mobius
Environment Any (naturally found on Angel Island)
Intelligence Semi-sapient
Biochemistry Chaos Energy-based
Biological Information
Lifespan Short, but can reincarnate
Reproduction Oviparous
Locomotion Crawling, walking, weak powered flight
Feeding Behavior Herbivorous
Predators Various fruits & nuts
Distinctive Features Baby-like bodies, blue color, teardrop-shaped head, pink butterfly wings
Eye Color Dark blue
Skin Color Baby blue with yellow tips (can change as they age)
Lineage Information
Ancestor(s) Chaos (Archie Comics continuity)
Descendant(s) Hero Chao
Dark Chao
Omochao (artificial)
Cultural Information
Alignment True Neutral
Personality Friendly
Organization Packs
Language(s) "Chao"
Affiliation(s) Chaos; whoever shows them love and affection
Capital City Master Emerald Temple
Sociocultral characteristics
Members Chaclon, Chails, Chaoko, Chaolin, Chaos, Chaosky, Cheese, Cheezlet, Chocola, Chronic, Chuckles, Dinner, Happy, Milk, Wacky
Scientific Taxonomy
Planet Mobius
Domain Eukaryota
Kingdom Animalia
Phylum Chordata
Subphylum Vertebrata
Class Faeria
Order Homomorphae
Family Bombupteridae
Genus Chao
Species C. chao (User: Parker Green 2021)
Other Information
Status Domesticated
Creator Master Emerald (In-universe)
Sega (Real life)
First Sighting Canon: Millennia in the past
Real Life: December 23, 1998
Last Sighting Canon: Current
Real Life: November 1, 2019

Chao are a domestic species of fairy-like creatures from Sonic the Hedgehog.



They are child-like blue creature with teardrop-shaped heads and pink wings. They are often considered cute and adorable. They are notably able to absorb the traits of any animal they come into contact with, altering their own DNA in the process.

Speech patterns[]

Chao make a variety of noises. Though they normally make almost baby-like sounds, they also commonly say "Chao", which is likely where they get their name from. One particular Chao, Cheese, has shown an ability to speak the Mobian language.


Depending on the fruits (Hero or Dark) they're fed, and who raises them, they can become one of two types of Chao: Hero Chao or Dark Chao.


Despite being sexless, Chao can lay eggs.


Chao live short but sweet lives. However, should a Chao receive enough love and be happy and content at death, they will reform back into an egg and hatch again, reincarnated as a new Chao.

Background history[]

In ancient times, the Chao lived in peace around the temple grounds of the Master Emerald, where they were protected by Chaos, a mutated Chao serving as both their guardian as well as deity. When the then-current chieftain of the Knuckles Clan of echidnas, Chief Pachacamac, greedily decided to invade the territory of the Chao to obtain the power of the Chaos Emeralds for themselves, Chaos absorbed the emeralds to become Perfect Chaos. It is said that in this form he nearly destroyed the world and was only stopped by the echidna Tikal. The two would come to inhabit the Master Emerald itself.

Millennia later, Dr. Eggman cracked the Master Emerald and this released Chaos, as well as Tikal. At this point the Chao seemed to be little more than animals and were easily domesticated and kept within designated "Chao Gardens" by the sapient inhabitants of the planet. Chaos was tricked into taking on its Perfect Chaos form once more but was stopped successfully by Super Sonic. With that Chaos and Tikal returned to the now-repaired Master Emerald.


  • The word "Chao" is both singular and plural, like sheep or moose.
  • Chao were originally considered to be named "Chicka Monkeys" to avoid confusion with the related character Chaos, but this idea was later dropped.