Because you like Mabel Pines in Gravity Falls

Milo Thatch is an enthusiastic researcher without cynicism. See them in Atlantis: The Lost Empire.

Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.

The cutest kitty this side of the galaxy, Nepeta Leijon is mischievous, caring, and obsessed with romance. See them in Homestuck.

GLaDOS will supply the food when you get together: a delicious cake. Of course, it could just be a trap so she can kill you. It’s hard to say. See them in Portal Series.

There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.

A stylish agent, Agent J would rather improvise than play by the rules. See them in Men in Black.

Nick Carraway is the perfect observer: always there for the events, but never too involved. See them in The Great Gatsby.

Talos is a mysterious military commander skilled in the art of deception. See them in Marvel Cinematic Universe.

Prideful and psychotic tendencies combine to make Dr. Eggman a dangerous and villain who will squash anyone in his path. See them in Sonic the Hedgehog.

Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.

Kesuke Miyagi is a karate expert who thinks the best way a scrawny high schooler can learn how to defend himself is by washing every surface in sight. See them in The Karate Kid.

A devoted butler, Alfred Pennyworth is both a fiercely protective guardian and a lethal gunman. See them in Gotham.