Rick and Morty: Look at Me!

Summer Smith stands in front of a large hole in the wall of a house and holds a remote controller device in one hand. Morty Smith looks back at her.

Like most teenagers, Summer Smith and her little brother, Morty, find each other annoying, but when trouble happens, they look out for one another.
From the Adult Swim series Rick and Morty

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The Loud House: Turn Up the Volume

The Loud siblings (Lori, Leni, Luna, Luan, Lynn, Lincoln, Lucy, Lana, Lola, Lisa, and Lily) gathered on and around a couch watching television

There are eleven children in the Loud household: Lori the eldest is always on her phone; Leni the second eldest is fashionable and ditzy; Luna is a rock musician; Luan is an aspiring comedian; Lynn is an athlete who loves sports; Lincoln the middle child is the only boy; Lucy is a pale-skinned goth; Lana is a tomboy who enjoys building and fixing things; her twin sister, Lola, loves wearing pink dresses; Lisa is a child prodigy, and Lily is a baby.
From the Nickelodeon series The Loud House

Peanuts: It’s a Nice Day, Charlie Brown

Charlie Brown and Sally standing in the grass under a blue sky

Even Charlie Brown has good days sometimes, though little sister Sally probably wishes her Sweet Babboo was there instead.
From the series Peanuts

Song of the Sea: Do You Believe in Magic?

Standing in front of several faerie statues, Ben grins while his younger sister, Saoirse, looks and smiles at him

Ben just wants to return home, but it’s his silent sister, Saoirse, that may hold the key to reuniting their family.
From the movie Song of the Sea

Gravity Falls: Mystery Solving Siblings

Dipper and Mabel Pines in a room of mystery

Dipper and Mabel Pines work together to uncover the truth.
From the Disney series Gravity Falls