"Finn the Human" and "Jake the Dog" are respectively the first and second episodes of the American animated television series "Adventure Time"' s fifth season.
 "Finn the Human" was written and storyboarded by Tom Herpich and Jesse Moynihan, whereas "Jake the Dog" was written and storyboarded by Cole Sanchez and Rebecca Sugar.
 The stories for both episodes were developed by Patrick McHale, Kent Osborne, and Pendleton Ward.
 It originally aired on Cartoon Network on November 12, 2012.
 The episodes guest star Ron Perlman as the Lich, Kumail Nanjiani as Prismo, Ming-Na as Farmworld Finn's mother, Cloris Leachman as Farmworld Marceline, James Kyson as Big Destiny & Trami, Eric Bauza as Tromo, and Jeff Bennett as Choose Bruce.
"Mr. Greg" is the eighth episode of the third season of American animated television series "Steven Universe", which premiered on July 19, 2016 on Cartoon Network.
 It was written and storyboarded by Joe Johnston and Jeff Liu.
 The episode was viewed by 1.549 million viewers.
 It is the series' first fully musical episode, and features seven songs, far more than any other "Steven Universe" episode.
Steven Quartz Universe is a fictional character and titular protagonist of the animated series "Steven Universe", created by Rebecca Sugar.
 Steven is a hybrid between a "Gem", a fictional alien being that exists as a magical gemstone projecting a body of light, and a normal human being.
 Voiced by Zach Callison, he made his debut in the first episode, "Gem Glow".
Rebecca Sugar (born July 9, 1987) is an American animator, director, screenwriter, producer, and songwriter.
 She is best known for creating the Cartoon Network series "Steven Universe", which has made her the first woman to independently create a series for the network.
 Sugar was formerly a writer and storyboard artist on the animated television series "Adventure Time"; her work on both series earned her four Primetime Emmy Award nominations.
Ian Jones-Quartey (born June 18, 1984) is an American writer, storyboard artist, animator and voice actor.
 He is best known for his webcomic "RPG World" and his work on "Steven Universe", "Adventure Time", and "Bravest Warriors".
 He is the creator of the animated series/video game hybrid "OK K.O.!
 Let's Be Heroes", based on his Cartoon Network pilot "Lakewood Plaza Turbo" which premiered on the network in 2017.
Steven Universe is an American animated television series created by Rebecca Sugar for Cartoon Network.
 It is the coming-of-age story of a young boy named Steven Universe (voiced by Zach Callison), who lives in the fictional town of Beach City with the "Crystal Gems" – Pearl (Deedee Magno), Garnet (Estelle), and Amethyst (Michaela Dietz), three magical humanoid aliens.
 Steven, who is half-Gem, goes on adventures with his friends and helps the Gems protect the world from their own kind.
 It premiered on November 4, 2013 as Cartoon Network's first animated series to be solely created by a woman.
 Books, comics and a video game based on the series have also been released.
 When the series is in a hiatus, there would usually be multiple episodes airing after it concluded.
 The theme of the series is love and family as it is based on the creator's brother, Steven Sugar.
"Steven Universe" is an American animated television series created by Rebecca Sugar for Cartoon Network.
 The series revolves around Steven Universe (voiced by Zach Callison), who protects his hometown of Beach City alongside Garnet (voiced by Estelle), Amethyst (voiced by Michaela Dietz) and Pearl (voiced by Deedee Magno), three magical alien guardians known as the Crystal Gems.
 The series was renewed for a fourth and fifth season in March 2016.
Stevonnie ( ) is a fictional character from the 2013 animated series "Steven Universe", created by Rebecca Sugar.
 A "fusion" of the protagonist Steven Universe and his friend Connie Maheswaran, Stevonnie is portrayed as an androgynous teenager, attractive to both men and women.
 First introduced in episode "Alone Together", Stevonnie only appears occasionally in the series.
Steven Universe: Attack the Light!
 is a tactical role-playing video game developed by Grumpyface Studios and published by Cartoon Network Games.
 The game, based on the animated TV series "Steven Universe" and featuring a story written by series creator Rebecca Sugar, was released for iOS and Android mobile devices on April 2, 2015.
 An Apple TV/tvOS version was later developed, which added "Diamond Mode", a higher-difficulty version of the game with added bonuses.
Steven Universe: Save the Light is an upcoming action-adventure role-playing video game developed by Grumpyface Studios based on the animated TV series "Steven Universe".
 A sequel to the 2015 mobile game "", it is to be released in Q3/Q4 2017 for PlayStation 4, Xbox One, and other consoles.
 The game was made public at PAX East in March 2017.

Question: Who was the animator behind Jake the dog and Steven Universe?
Answer: Rebecca Sugar