Ruth

Ruth is an infant girl who was abandoned at the doors of the Willoughby residence, whose children leave her at Commander Melanoff's candy factory.

History
Ruth was abandoned at the entrance of the Willoughby residence in a box with holes on it for air.

After discovering an orphaned, hyperactive baby, Jane insisted that she and the twins take her in and wanted to keep her despite Tim's protests that they could get in trouble if their parents saw the baby. Unfortunately for them, the baby sneaks away and causes a mess in their parents' living room and upon finding the baby and making sure she isn't a Willoughby by cutting a strand of her hair, the Willoughby parents throw all five out of the house, refusing to let them return unless they get rid of the baby. Tim blamed Jane for this but Jane shrugs it off and claims that she knows what the perfect home for the baby is. They leave the baby, who was named "Ruth" by Tim because according to him they "had to be Ruthless" by writing the word "Ruth" on her onesie with pink cream and leave her on a box on the doorstep of Commander Melanoff’s candy factory at the end of the rainbow Jane was watching earlier while trying to sing. Having never been outside before, the younger siblings believe the candy factory to be the perfect home. When the factory's owner finds Ruth on a candy box at his doorstep he grabs her and she tackles his face, causing him to back away in fear.

After that, Commander Melanoff called Orphan Services but ended up getting cold feet, hung up on them and decided to adopt Ruth, who proved to be a handful for the lonely man since due to having to change diapers constantly and going through eight days with little to no sleep. The Willoughbys later returned to his factory as per their Nanny's orders so that she could check on Ruth herself and make sure she was safe, although the Commander initially tried to hide Ruth from them but in the struggle Ruth sneaked out and into the candy machines while eating a large amount of Candy. Ruth nearly fell into one of the machines until Nanny caught her and chastised the Commander, who was grateful to the Willoughby children for bringing Ruth to him.

After Ruth vomited all the candy she had eaten, Nanny made her some oatmeal and she and Commander talked about how he was doing as a new father and parenthood in general, further convincing the Willoughbys that the factory was the perfect home for Ruth.

When the Willoughby children nearly freeze to death after being abandoned by their parents on top of the Unclimbable Alps without a way to get them down. Ruth accompanies Melanoff and Nanny to find them before they die, having followed the dirigible. Now officially orphans, the Willoughbys are adopted by Linda and Melanoff, living happily ever after in Melanoff’s candy factory with them, Ruth and the Cat.

She is last seen devouring the family's entire meatloaf with some of it getting stuck in her upper lip, while Jane comments that Ruth had grown a meat mustache. Ruth says her first word; "Willoughby" before passing out while her family laughs.

Appearance
Ruth is a small baby with rose skin, a few tufts of dark blue hair and big eyes. She usually wears a yellow onesie or a yellow parka if it's cold.

Personality
Ruth is a very happy and active baby who rarely stops moving around or smiling and often gets herself in trouble because of her habit of sneaking away when her caretakers are distracted. She also has a great appetite.

Trivia

 * Jane originally wanted to name her "Taffeta".