Question: Who are the two main characters of the animated Cartoon Network series that Boulder Media is best known for?

full_context: Document 1: Foster's Home for Imaginary Friends: Foster's Home for Imaginary Friends (commonly abbreviated as Foster's) is an American animated television series created by Craig McCracken for Cartoon Network Studios. The series, set in a world in which imaginary friends coexist with humans, centers on an 8-year-old boy, Mac, who is pressured by his mother to abandon his imaginary friend, Bloo. After Mac discovers an orphanage dedicated to housing abandoned imaginary friends, Bloo moves into the home and is kept from adoption so long as Mac visits him daily. The episodes revolve around Mac and Bloo as they interact with other imaginary friends and house staff and live out their day-to-day adventures, often getting caught up in various predicaments.
Document 2: Adventure Time: Adventure Time is an American animated television series created by Pendleton Ward for Cartoon Network. It follows the adventures of a boy named Finn (voiced by Jeremy Shada) and his best friend and adoptive brother Jake (John DiMaggio)— a dog with the magical power to change shape and size at will. Finn and Jake live in the post-apocalyptic Land of Ooo, where they interact with Princess Bubblegum (Hynden Walch), the Ice King (Tom Kenny), Marceline the Vampire Queen (Olivia Olson), BMO (Niki Yang), and others. The series is based on a 2007 short produced for Nicktoons and Frederator Studios' animation incubator series "Random! Cartoons". After the short became a viral hit on the Internet, Cartoon Network commissioned a full-length series, which previewed on March 11, 2010, and officially premiered on April 5, 2010.
Document 3: Straandlooper: Straandlooper is an animation studio and video game developer based in Donaghadee, Northern Ireland. They developed the episodic video game for iPhone, "" which is based on their character "Hector: Fat Arse of the Law". Straandlooper is notable for being Northern Ireland's first animation studio to produce a television series for the international market. As a video game developer, they are notable for being the first company where Telltale Games took on a publishing role, rather than a directing role. Telltale funded the development of the final two episodes of "Hector: Badge of Carnage" and published all three episodes on additional platforms, in addition to iOS.
Document 4: The Amazing World of Gumball (season 5): The fifth season of the British-American animated television series "The Amazing World of Gumball", created by Ben Bocquelet, aired on Cartoon Network in the United States on September 1, 2016. The series focuses on the misadventures of Gumball Watterson, a blue 12-year-old cat, along with his adopted brother, Darwin, a goldfish. Together, they cause mischief among their family, as well as with the wide array of students at Elmore Junior High, where they attend middle school.
Document 5: Boulder Media Limited: Boulder Media Limited (also known as Boulder Media) is an Irish animation studio. Boulder Media is best known for producing select episodes of the "Foster's Home for Imaginary Friends" series for Cartoon Network. Another project, "The Amazing World of Gumball", was produced by Boulder and Cartoon Network Development Studio Europe for the show's first season. They also produced the animation for season 2 of "Wander Over Yonder". They also animate the 2015 series of "Danger Mouse".
Document 6: List of The Amazing World of Gumball episodes: "The Amazing World of Gumball" is a British-American animated comedy television series created by Ben Bocquelet for Cartoon Network. Since its debut on May 3, 2011, 191 episodes of the series have been broadcast; its fifth season premiered on September 1, 2016. "The Amazing World of Gumball" revolves around the life of a 12-year-old cat named Gumball Watterson (Logan Grove, seasons 1-2-3; Jacob Hopkins, season 3 to 5; Nicolas Cantu, most of season 5 onward) and his frequent shenanigans in the fictional American world of Elmore. Throughout the series, he interacts with characters such as his former pet, brother and best friend Darwin (Kwesi Boakye, seasons 1-2-3; Terrell Ransom, Jr., season 3 to 5; Donielle T. Hansley Jr., most of season 5 onward), sister Anais (Kyla Rae Kowalewski), and parents Nicole and Richard (Teresa Gallagher and Dan Russell).
Document 7: Brown Bag Films: Brown Bag Films, or Brown Bag, is an Irish-Canadian television animation production studio, based in Dublin, Ireland with a 2D facility based in Manchester, UK. Best known for its character CGI-animated television series' and short films, including the Oscar nominated "Give Up Yer Aul Sins" and "Granny O'Grimm's Sleeping Beauty". Brown Bag Films was established in 1994 by Cathal Gaffney and Darragh O'Connell and the studio has garnered a number of awards, including Academy Award nominations for "Give Up Yer Aul Sins" (Best Animated Short Film 2001) and "Granny O'Grimm's Sleeping Beauty" (Best Animated Short Film 2010), six Emmy Award wins for "Peter Rabbit", an Emmy award for "Bing" and a number of BAFTA, Emmy and Annie nominations for their shows "Octonauts", "Doc McStuffins" and "Henry Hugglemonster".
Document 8: The Amazing World of Gumball (season 2): The second season of the British-American animated television series "The Amazing World of Gumball", created by Ben Bocquelet, originally aired on Cartoon Network in the United States. The season debuted on August 7, 2012 and ended on December 3, 2013. This season consists of 40 episodes. The season focuses on the misadventures of Gumball Watterson, a blue 12-year-old cat, along with his adopted brother, Darwin, a goldfish. Together, they cause mischief among their family, as well as with the wide array of students at Elmore Junior High.
Document 9: List of Adventure Time episodes: "Adventure Time" is an American animated television series created by Pendleton Ward for Cartoon Network. The series follows the adventures of Finn (voiced by Jeremy Shada), a human boy, and his best friend and adoptive brother Jake (voiced by John DiMaggio), a dog with magical powers to change shape and grow and shrink at will. Finn and Jake live in the post-apocalyptic Land of Ooo. Throughout the series, they interact with the show's other main characters: Princess Bubblegum (voiced by Hynden Walch), the sovereign of the Candy Kingdom; the Ice King (voiced by Tom Kenny), a demented but largely misunderstood ice wizard; Marceline the Vampire Queen (voiced by Olivia Olson), a thousand-year-old vampire and rock music enthusiast; Lumpy Space Princess (voiced by Ward), a melodramatic and immature princess made out of "irradiated stardust"; BMO (voiced by Niki Yang), a sentient video game console-shaped robot that lives with Finn and Jake; and Flame Princess (voiced by Jessica DiCicco), a flame elemental and ruler of the Fire Kingdom. The pilot first aired in 2007, and it was later re-aired on the incubator series "Random! Cartoons" on Nicktoons Network. The pilot eventually leaked onto the internet and became a cult hit on YouTube. After Nickelodeon declined to turn the short into a full-fledged show, Cartoon Network purchased the rights, and "Adventure Time" launched as a series on April 5, 2010.
Document 10: Wander Over Yonder: Wander Over Yonder is an American animated television series on Disney XD. Created by Craig McCracken, it follows Wander and his best friend and steed Sylvia. Adventurous and optimistic, Wander rides across the galaxy to help persons live freely, against the intentions of Lord Hater to rule the universe. The series is McCracken's first production for Disney Television Animation; he previously helmed "The Powerpuff Girls" and "Foster's Home for Imaginary Friends" for Cartoon Network.
Document 11: The Cartoonstitute: The Cartoonstitute was a planned Cartoon Network project created by Cartoon Network's executive Rob Sorcher that would have been a showcase for animated shorts created without the interference of network executives and focus testing. It was headed by Craig McCracken (creator of "The Powerpuff Girls", "Foster's Home for Imaginary Friends", and "Wander Over Yonder") and Rob Renzetti (creator of "My Life as a Teenage Robot"). 39 shorts for the project were in development at Cartoon Network Studios, but only 14 of these were completed. Eventually, balancing 5 upcoming shows and adding another proved difficult and the project was scrapped. Of the shorts which were made, only "Regular Show" and "Uncle Grandpa" have been greenlit to become animated series (the latter was initially greenlit as "Secret Mountain Fort Awesome", before becoming a series of its own). On May 7, 2010, Cartoon Network uploaded nearly all of the shorts to their website. The only shorts not uploaded were "Maruined", "3 Dog Band", and "Joey to the World".
Document 12: 9 Story Media Group: 9 Story Media Group Inc. is a Canadian entertainment company and an international marketer and distributor best known for producing animated series such as "Daniel Tiger's Neighborhood", "Wild Kratts", "Numb Chucks," and "Peg + Cat". The company has employed over 250 creative and production staff in its Toronto facility and has produced over 900 half hours of award-winning children’s content.
Document 13: Nickelodeon Animation Studio: Nickelodeon Animation Studio, also known in Burbank as Nickelodeon Studios Burbank, is an American animation studio owned and operated by Viacom through its television network Nickelodeon. The studio produces many of the network's most popular animated series, including "SpongeBob SquarePants", "The Fairly OddParents", "Teenage Mutant Ninja Turtles", "Harvey Beaks", "The Loud House", "Bunsen Is a Beast", and "Welcome to the Wayne". It also produces programs for Nicktoons Network, Nick at Nite, TeenNick, and Nick Jr. as well.
Document 14: Craig McCracken: Craig Douglas McCracken (born March 31, 1971) is an American animator, director, writer, and producer. He is best known for creating the Emmy-winning animated series "The Powerpuff Girls", "Foster's Home for Imaginary Friends" and "Wander Over Yonder" as well as writing and storyboarding for "Dexter's Laboratory" for Cartoon Network. He has been married to fellow animator Lauren Faust since 2004.
Document 15: Out of Jimmy's Head: Out of Jimmy's Head (abbreviated as OOJH), is an American live-action/animated television series. It was advertised as the first Cartoon Network series in this genre, even though "Big Bag" was what took credit, while also including some animated segments. Based on the first live-action/animated original channel movie "Re-Animated", that was aired on December 8, 2006, it is produced by Cartoon Network Studios and Brookwell McNamara Entertainment (the latter known for shows such as "Even Stevens" and "That's So Raven"). It was created by Tim McKeon and Adam Pava, who were originally the writers for "Foster's Home for Imaginary Friends" and "The Life and Times of Juniper Lee", but also the creators of "Weighty Decisions" short on Cartoon Network's "Sunday Pants" anthology series.
ground_truth: Mac and Bloo