Sonic XD: expansion pack

Even more episodes and characters. Sonic's adventures on earth and Mobius continue! Later a dimensional rift sends Sonic and friends across various alternate time lines throughout Sonic's cartoons and comics.
== Characters ==
*Sonic
The blue hedgehog 
*Tails
Sonic's friend, an inventor and engineer. Wears diapers.
*Knuckles
Sonic's former rival and hot headed friend
*Amy Rose
Sonic's girlfriend, she hits people with her pico pico hammer.
*Cream the Rabbit 
Tails's friend, she likes all things cute. She lives with her mother Vanilla and her pet Chao, Cheese.
*Big the cat
A purple cat who loves fishing.
*Sticks the Racoon 
Sticks is back despite classic sonic fans attempting to destroy her.
*Tikal
One of Knuckles's tribe.
*Chris Thorndyke 
A kid who rescues Sonic and follows him around like a demented fanboy. A Marty Stu. Gets killed off every episode.
*Chuck Thorndyke 
Chris's grandpa.
*Chris's parents
Chris's busy rich parents, they never look after him leaving him with his grandpa, butler and house maid.
*Mr Tanaka
Chris's Butler, he is a black belt in Kung Fu.
*Chris's House maid
A black house maid or Mammy, Chris gets a lot of angry comments about having a Mammy.
*Chris's school friends 
He has a black friend, a girl, a disabled girl in a wheelchair and a tomboyish girl as friends.
*Robotnik/Eggman
Sonic's archnemesis. A mad scientist.
*Shadow the hedgehog 
An experiment to destroy Sonic, spend most of his time being an Emo and fighting the G.U.N aliens.
*Rogue the Bat
One of Eggman's henchmen or henchwoman. Now spends most of her time as a jewel thief.
*E109 Omega
One of Eggman's robots.
*Decoe and Becoe
More robots, this duo of numbskulls are Sonic X's answer to Scratcher and Grounder.
*Bokon
Yet another robot. Eggman's personal messager robot. It's his job to relay information to Eggman or send messages to Sonic, usually warnings or threats from Eggman. X's equivalent to Coconuts the monkey.
*Sam Speed
A newsreader and professional racing car driver, he shares a rivalry with Sonic over who's faster.
*Vector, Espio and Charmy Bee
Team Chaotix and self appointed detectives for hire. Mighty the Armadillo is still on Mobius.
*Flickies and other animals 
Small cute animals trapped in capsules, Sonic has to rescue them.
*Billy Hatcher
A boy in a chicken suit who is called over to Morning world to save it from the evil Dark Raven.
*Rolly Roll
The girl of Billy's group of friends.
*Chick Poacher
The little kid of Billy's group of friends, he acts before thinking which makes his friends nervous. Like Tails he still wears diapers.
He got his chicken suit after being latex slimed by a honey elemental slime made of gooey honey.
*Bantam Scrambled
The big kid of Billy's group of friends. He loves cuteness but hates evil and injustice. He is obsessed with time keeping and gets mad at Billy for being late.
*The Chicken God
The Chicken God of Morning world.
*Chicken elders
Each region of Morning world has an elder who crows to make the sun rise every morning. However the crows have trapped them in golden eggs.
*Chickens and chicks
The people of Morning World, talking chickens! The baby chicks wear diapers.
*Chris Chan
The main Antagonist of series 1. A demented, crazed fan boy who dislikes Sonic Boom's redesign of Sonic and his friends. Blue arms drive him insane and he maces people who disagree with him.
*Sonichu
Chris Chan's fan character that he insists is canon. A Mobian Pikachu drawn in the style of Sonic. Like most Pikachus he has powerful electricity attacks.
*Demented fan characters and recolours
During the series finale, Chris Chan and his army of demented sonic fans create their own bizarre and frankly terrible sonic characters.
*Sonia the Hedgehog 
Not to be confused with Sonia from Sonic Underground. A gender swapped version of Sonic.
*Purple Sonic
A purple recolour of Sonic from another universe, he and Sonia made out ontop of a pile of Chaos Emeralds and got super pregnant.
*Tailz
Tails with a Z. An alternate universe version of Tails who has three tails and can inflate himself like a balloon.
*Blue Tails
A blue recolour of tails.
*KEVIN!
A poorly drawn version of Knuckles wearing a diaper who always shouts very loudly.
*Chris the Fox
An ABDL who's OC takes the form of a human or a brown fox like tails. His fur is the same shade of brown as Satam Tails's fur. He is only a baby and as such wears diapers.
*Alternate realities 
Series 2 deals with Sonic visiting alternate versions of himself.
*Aosth universe
AOSTH Sonic, Tails, Robotnik, Scratcher, Grounder, Coconuts, Warpnik. Everything in this universe is light hearted and silly like a cartoon. The Robotnik here is short tempered but easily blustered.
*SATAM universe 
SATAM Sonic, Tails, Sally Acorn, Antoine, Bunnie Rabbot, Rotor the Walrus, Dulcy the dragon, Uncle Chuck, Cyber Robotnik, Snively.
In contrast this universe is very dark and serious. This universe is the result of a seriously dangerous and Savvy Robotnik successfully taking over Mobius. Sonic in this universe is part of a group of freedom fighters trying to take back Mobius which has now been polluted into a poisonous, treacherous wasteland with jungles full of deadly mutated plants.
*Underground Universe
Underground Sonic, Tails, Manic, Sonia, Robotnik, Knuckles.
An alternate universe where Sonic has a brother and sister and is part of the Mobius Royal family. He and his siblings were separated and adopted by other families to protect them from this universe's Robotnik.
*Boom Universe
Boom Sonic, Tails, Knuckles on steroids, Sticks the Racoon, Eggman.
A universe animated in CGI with bandages worn as accessories, neck scarfs and blue arms. Knuckles in this universe looks like he's been on steroids.
*OAV universe 
OAV Sonic, Tails, Knuckles, Robotnik/Eggman
The Anime Movie universe. Tails is afraid of lightning and a pervert in this universe.
*Expanded Universe
The World of the Comics and Videogames.
Sonic, Tails, Knuckles, Amy, Cream, Vanilla, Cheese, Chao, Scourge, Miles, metal Sonic, Mecha Sonic, Eggman, Eggman Nega, Mephiles, Shadow, Rogue, E109 Omega, Vector, Espio, Charmy Bee, Mighty the Armadillo, Blaze, Big, Silver the hedgehog. And many other characters live in this universe.