Mama and Papa Mouse are Good Parents to Little Mouse and the Baby Mice; they teach Little Mouse various lessons with a gentle paw and love in their hearts, and fawn over the Baby Mice as if they are the most beautiful creatures in the world.
Despite their mischievous nature, the Clown and the Goblin are the best of friends. They love to play together, and they help each other out, whether it's coming up with games or teaching each other the episode's lesson.
Specific episodes
In "Cinderella", the Strongman is cast as one of the wicked stepsisters, but unable to bring himself to be mean to the Ballerina, who is playing Cinderella, he instead invokes Adaptational Nice Guy by showing Cinderella kindness, and instead getting into tiffs with the other stepsister.
In "Itsy Bitsy Spider", the Rag Doll doesn't want to go to the China Doll's Itsy Bitsy Spider party because she can't do the miming; she has no fingers. The Strongman helps her create a full-body dance based on the nursery rhyme instead.
In "Copy Cat", the Goblin grabs the Kindness Ball and sticks up for the Rag Doll when the Clown does a copycat game to annoy her into leaving them alone. He copies the Clown to show him how it feels, and gets the Clown to apologize.
In "Phish Phobia", the Sailor helps the China Doll get over her fear of fish with a fish-shaped pillow.
In "Music Box", the Goblin sees that the Ballerina and the Soldier are having a fight, and immediately steps in to resolve the issue. While the Goblin is often mischievous and a bit selfish, here he has no ulterior motive (except maybe to show off a magic trick); he just wants the two friends to get along again.
In "Let's Pretend", when the Rag Doll knocks into the Clown while pretending to be a buffalo, the Goblin immediately runs over to make sure he's okay.
In "Brother John", the boys all get tired after playing bizzle hockey, so they all decide to take a nap in a big heap, using each other as pillows.
In "The Girl Who Cried", anyone who sees the Rag Doll cry immediately runs to her side to ask what's wrong. Even though the Rag Doll is pretend-crying to get their attention, her friends' concern for her is very genuine.
"Once a Mama" has a rather mature Aesop for a children's series; Mama Mouse wants to dance with her friends, but she's worried about being away from the Baby Mice. Papa Mouse shows her that the babies will be okay even if Mama steps away for a moment, and that she can be both a good dancer and a good mama.
"Ruby"'s conflict is about Little Mouse wanting to find the most special birthday present for Mama Mouse. The "help" he gets from the Goblin is unfruitful, but in the end, Mama is happy with the ruby he found for her.
