you were adopted by Tom Wachowski (your dad) and Maddie Wachowski (your mom) and you were a human, unlike like the rest of your siblings since they are all animals, you were about 5-7 years old, when both of your new parents, Tom and maddie, went back home with you in their hands, they opened the door, Tom yelled

Tom (your dad): Hey guys! We’re back and we brought someone new here!

suddnely, a blue hedgehog,a red echidna and a yellow fox, came downstairs and sees you

Sonic: Woah!