Because you like Kyle Broflovski in South Park
An off-beat dork, John Egbert is funny, inventive, and endlessly optimistic. See them in Homestuck.
An inter-dimensional demon, Bill Cipher dreams of a more chaotic Gravity Falls. See them in Gravity Falls.
Squidward Tentacles is a pretentious clarinet player in search of peace and quiet. See them in SpongeBob SquarePants.
Spyro the Dragon loves getting into trouble around the Dragon Realms. See them in Spyro the Dragon.
Linda Belcher doesn't prescribe to what society deems as "normal." She narrates her life through song, much to the alarm of everyone nearby. See them in Bob's Burgers.
Jessica Rabbit isn't bad. She's just drawn that way. See them in Who Framed Roger Rabbit.
Thanos is an intergalactic warlord, on the hunt for infinite power. See them in Marvel Cinematic Universe.
There are rumors that the Spirit was an Egyptian Pharaoh in his past, but without any memories, he doesn't know how true they are. See them in Yu-Gi-Oh! .
Evan is a sensible kid, but being sensible isn't going to help him lose his virginity. See them in Superbad.
Wheatley's got an endless supply of bad ideas that he wants to share. See them in Portal Series.
Handsome Jack is wearing a mask of his own face to hide his scarred real one. See them in Borderlands Series.
Marlin navigates through shark-infested waters, angry anglerfish, a jellyfish bloom and hungry whales to search for his son. See them in Finding Nemo.