Before we begin with the harem I'm removing Lord EXE form for this since Y/N will be a good EXE in the story and replacing it with this

Hope Form

And with this part it will only be Sonic characters but after the Prologue more will show up, so let's begin

Amy Rose
Rusty Rose
Thorn Rose
Black Rose
Rouge the bat
Rebel Rouge
Prim Rouge
Batten Rouge
Sage ( Adult )
Sticks the Bagger
Blaze the Cat
Vanilla Rabbit
Honey the Cat
Sally Acorn
Sonia the Hedgehog
Queen Aleena
Zeena
Metal Sonica
Surge the Tenrec ( Rival )
Breezie the hedgebot
Mina the Moongose
Nicole the Lynx
Tangle the Lemur
Whisper the Wolf
Bunnie Rabbot
Lanolin the Sheep
Sharah
Elise the Phoenix
Lah the Ghost
Fiona the Fox
Ariem the Ram
Conquering Storm
Cassia The pronghorn
Clover The pronghorn
Tikal
Shade
Milena
Lupe the Wolf
Wave the swallow
Carrotia the rabbit
Echo the dolphin
Psycho the EXE
Maddie the Hedgehog ( Aka Mad Amy )
Sarah the NeedleMouse
Modana
Eggma'am also known as Ms.Robotnik
Talia ( Female Tails )
Knuxie ( female Knuckles )
Shadie ( Female Shadow )
Sia ( Female Silver )
NiGHTS the dream jester
Bernadette the Hedgehog
Shara the genie
THE END
Dulcy the Dragon
Whacky the bootleg
Female Chaos
Fleetway female
Galaxaina

Maybes

Lady Fatal ( Female Fatal Error )
Mojin goddess of chaos ( Female Majin )
Rouge.exe
Female EYX
Female Furence
Lady X
Mad Sonica
Maria the Hedgehog
Mecha Amy
Metal Amy
Nazra
Static ( Anti Surge )
Scream ( Anti Whisper )
Wrangle ( Anti Tangle )
Memphis ( You can choose what her form is )
Anti Vanilla ( Don't have name )
Lilith ( Anti Fiona )
Sara the Human mobian hybrid
Histune Miku ( Biggest fan/cosplayer )
Rosy the rascal
Kyu the fox ( female Nine )

And that is it like I said this is just part one, so after the Prolouge other characters will show up so feel free to put in suggestions for part 2 and I'll see you later.