Black's data:

*Dread is a version of Black wich is, as starved, very hungry

*Black falls in a place where every person there is a little starved, but, because Black is new, he doesn't get any food, so he gets too starved, in fact, he always hides his left hand cause he ate it, and he has a robotic one

*In the game where Dread will appear, in a normal timeline, they would create a machine which would make infinite energy for substantial, but, in Dread's timeline, that never happens, do he gets starved, and, one day where he was near a fire, he saw someone burning alive, so he ate the person, because Black was in death's door, so that was his las recourse, and he liked it, he loved it, so he created a robot Wich would do the same than furnace Sonic, he called it furnace shadow

Furnace Shadow's data:

*He has the same abilities than furnace Sonic, but he is even faster

*He runs against the main character, and, I'm the original game where furnace will appear, he isn't a furnace, he is just a robot, that runs against the main character, but he... Well, he starts to cough and cough and he falls as he is running, causing Black [the normal Black] to decide to battle the main character in a speed duel, where, at the end, there's, a wall, and Black stops the protagonist before he crushes to dead, but, Dread, doesn't do that, so you'll die, as in prey, but crushed into a wall