The Barnaby's

The Barnaby's, also known as Barnaby A and Barnaby B, are one of the protagonist (alongside Tim and Jane) and youngest children of the Willoughbys.

History
Like their parents and siblings, the Barnabys were born in a family of great people like scientists and historians but that stopped with their parents, whose profession remains unknown, are rather slow-witted and neglect their children. They were constantly neglected by their parents, who never even bothered to give them different names, never left their house and were made to sleep in a shared hammock in the attic although they spend a lot of time in the library either reading or tinkering. They usually do whatever their siblings told them to do.

When their parents once again refuse to feed them, the twins walk up to them and greet their mother by saying "Hi Mommy" is a rather creepy voice and despite Tim being the one trying to keep his three younger siblings away he is the one being sent to the coal bin while the Barnaby's go back to tinkering.

When the nanny arrived, the twins initially sided with their brother and made a plan to catapult the nanny out of the house until she quickly won them over by complimenting their catapult and giving them the nicknames "Barnaby A" and "Barnaby B" and made oatmeal for dinner, which the twins and Jane ate happily.

When Child Protective Services came to take the children, The Barnabys were heartbroken but were also the only ones allowed to stay together. They were taken to a "modern home"; an apartment filled with all kinds of electronic gadgets like phones, laptops, a large TV and they're left plugged into media streaming from the internet 24/7, leaving the kids hypnotized by everything they see, while the couple that is supposed to be looking after them remain oblivious to their surroundings using their VR headsets, even when Tim and Nanny show up to retrieve the twins.

Appearance
The Barnaby's are both short, and similar to the other Willoughby's as they have a long pointy nose, red hair, and a skinny body. Their have their hair cut in a "mushroom"-like style.

The Barnabys dress in gray dress shirts and pants with overall straps. The only thing that tells them apart is the maroon sweater that they constantly switch between the other Barnaby since their biological parents refused to give them another one. However, after being adopted they are each given their own sweaters, which are either matching red sweaters or brown, yellow or green.

Sometime after being adopted it is revealed that both twins are early bloomers since they each grew big, bushy mustaches and developed low, adult-like voices despite still being very small.

Personality
The Barnabys are smart and nice even though they can come off as creepy sometimes due to how alike they look and behave. They are also quite obedient and do what their elder siblings or Nanny tells them to do. They also tried to be nice to their mother by greeting her and calling her "mommy" but to no avail since that only creeped her out.

They are very close to each other, when one twin has the sweater he is quick to pass it to his brother when the sweater-less twin can no longer stand the cold, always work together and always talk in unison or finish each other's sentences.

Trivia

 * In the book they are the middle siblings and Jane is the youngest but in the movie it is the other way around.
 * In the credits it is revealed that they grew to be very tall, even taller than Tim.