Kid at Heart Cartoons

Adventure Time follows the adventures of a boy, Finn the Human (voiced by Jeremy Shada), and his best friend and adoptive brother Jake the Dog (John DiMaggio), who has magical powers to change shape and size at will. Pendleton Ward, the series' creator, describes Finn as a "fiery little kid with strong morals". Jake, on the other hand, is based on Tripper Harrison, Bill Murray's character in Meatballs. This means that while Jake is somewhat care-free, he will "sit [Finn] down and give him some decent advice if he really needs it". Finn and Jake live in the post-apocalyptic Land of Ooo, which was ravaged by a cataclysmic nuclear war a thousand years before the series' events. Throughout the series, Finn and Jake interact with major characters, including: Princess Bubblegum (Hynden Walch), the sovereign of the Candy Kingdom and a sentient piece of gum; the Ice King (Tom Kenny), a menacing but largely misunderstood ice wizard; Marceline the Vampire Queen (Olivia Olson), a thousand-year-old vampire and rock music enthusiast; Lumpy Space Princess (Pendleton Ward), a melodramatic and immature princess made out of "lumps"; BMO (Niki Yang), a sentient video game console-shaped robot that lives with Finn and Jake; and Flame Princess (Jessica DiCicco), a flame elemental and ruler of the Fire Kingdom.

Gravity Falls is an American animated television series produced by Disney Television Animation originally for Disney Channel (and then later for Disney XD). For their summer vacation, 12-year-old Dipper Pines and his twin sister Mabel are dropped off from their home in Piedmont, California to the fictitious town of Gravity Falls, Roadkill County, Oregon to spend the summer with their Great Uncle Stan Pines (often shortened to Grunkle Stan), who runs a tourist trap called the 'Mystery Shack'. Things are not what they seem in this small town, and with the help of a mysterious journal that Dipper finds in the forest, they begin unraveling the local mysteries. With appearances from Wendy Corduroy, Mystery Shack cashier; Soos Ramirez, friend of Dipper and Mabel and handyman to Grunkle Stan; plus an assortment of other characters, Dipper and Mabel always have an intriguing day to look forward to

Regular Show (also known as Regular Show in Space during its eighth season) is an American animated television sitcom created by J. G. Quintel for Cartoon Network. The series revolves around the daily lives of two 23-year-old friends, Mordecai (a blue jay), and Rigby (a raccoon). They work as groundskeepers at a park, and spend their days trying to avoid work and entertain themselves by any means. This is much to the chagrin of their manager/boss Benson (a gumball machine) and their coworker Skips (a yeti), but to the delight of their (other) manager/boss Pops (a man with a lollipop-shaped head). Other coworkers include an overweight green man called Muscle Man, and a ghost called Hi-Five Ghost.