My Brother, the Robot [SLOW UPDATES]

*Based on some Shamchat RPs, inspired by Steam Powered Giraffe and Small Wonder*
What if Dipper was not human?
What if the Pines boy we all know and love was hiding a secret?

The Pines Family is smart, a lot of people know that; sales, science, engineering, even crafts.
But something has been kept concealed to everyone but Mabel and her parents.
Dipper Pines, Mabel's 'twin brother' is not a human; instead he's an experimental steam powered robot with a teal-coloured core where his heart ought to be, and a silver tongue.
He was invented by none other than Mr Jeffery Pines, Mabel and Dipper's 'father' and a brilliant inventor; the mechanical boy was always his greatest success.
Over the time he'd been in the family, the automaton slowly got more and more sentient with each passing day, he and Mabel working together to conceal the secret from the town, even their great uncles.

Mabel wants her brother to be happy.
Dipper wonders what it's like to be human.
Will they both get their dreams or will everything malfunction?

*Gravity Falls is not owned by me. All rights reserved. I only own this story idea*