(A/N: this is going to half of Sonic the Hedgehog, so I don't own Sonic the Hedgehog or Sailor Moon. Enjoy the flashback story,)

Chapter 0

Prologue

50 years ago: In the Space Colony ARK

Professor Gerald Robotnik wanted to discover the secrets of eternal life on the government's orders, so he decided to create two powerful beings who would be both proclaimed as "The Ultimate Life Forms" in order to protect the innocent from evil and keep the world at peace. So the determined scientist contacted the demonic alien named Black Doom and formed a proposition with him. If the leader of the Black Arms aided him with his research, then Gerald would deliver the seven Chaos Emeralds to him in fifty years' time. Using his human, and sayian blood, (for Ethan to become a half human, and half saiyan), the deadly Black Doom helped Gerald bring forth two life forms by the names of Shadow and Ethan. Shadow is a male anthropomorphic black hedgehog with red streaks, garnet eyes, and red and white shoes. This dark incarnation was known as the first Ultimate Life Form.
Ethan is a 17 year- old boy with dirty blond hair and courageous blue eyes, whose shoes appear similar to Shadow's, with the difference that their colors are blue and red. He bears a necklace embedded with an bat emblem that resembles Batman's signature symbol, smooth golden rings on each of his wrists, a white shirt with the logo called 'Quicksilver' on the front, and a pair of blue pants. This teenage humanoid was named the second Ultimate Life Form. So after these two androids came alive, they met their creator's gentle granddaughter, Maria Robotnik, who became very fond of both of her grandfather's creation. Towards Ethan; she was like an adoptive sister, whereas Shadow was her brother figure. To Shadow; Maria was his only friend, and Ethan his brother figure. Both the Ultimate Life Forms and the young girl all enjoyed their close friendships in the Space Colony ARK. Maria had explained to Ethan about knowing the differences between good people and bad people, and that his grandfather planned on giving him saiyan battle armor. Maria had also mentioned that this white armor would help him in both combat and defense. Throughout his time spent in space, Ethan became the softest, funniest, most serious, most merciful, and the most powerful Ultimate Life Form. His personality is identical Shadow's by only half, but this still caused their time on the Space Colony ARK to disappear when the government accused Projects Shadow and Ethan as threats. Without hesitation, the general's G.U.N. troopers dispatched to the Space Colony ARK, they accomplished in destroying the research, shutting down the ARK completely, and killing all those who were present, including Maria. Killing this innocent sweet heart was the most horrid thing that the gunmen could do. Deep inside the minds of Ethan and Shadow, seeing Maria near her demise shattered their hearts in millions of glass shards; several pieces that could probably never be replaced or mended. Before Professor Gerald's only child actually died, she ejected Shadow and Ethan towards Earth in separate escape pods, stated one last request before her soul left her injured body.

"Shadow, Ethan... I beg of you... please, do it for me... for a better future... for all the people who live on that planet... give them a chance to be happy. Let them live for their dreams. I know you two can do it. That's the reason that you were both brought into this world. Sayonara, Shadow and Ethan."

As she let out a sign of pain, Ethan and Shadow both yelled out her name.

"Maria!" Ethan and Shadow beckoned to her. She was getting weaker and weaker, and there wasn't a way that either Ethan or Shadow could save her.

Maria looked at both of them and smiled warmly. Even when her soul was about to be carried to a better place, the Robotnik family member still kept her faith.

"I'm sure that you two will be happy down there, I only wish I could go along with you two, the world looks so beautiful up here in space, but my grandfather says that 'the people who live down there have to face many problems... that's why you two were created... to help those people solve their issues and to be friendly to them." With only an little ounce of strength remaining in her tiny body, she slammed her fist onto the ejection switch and sent Shadow and Ethan towards Earth in opposite directions without a trace.