Question: What was Peter Browngradt's best known  animated television series based on?

Context paragraphs:
The Incredible Hulk (1982 TV series): The Incredible Hulk is an animated television series based on the Marvel Comics character of the same name.  The series ran for 13 episodes on NBC in 1982, part of a combined hour with "Spider-Man and His Amazing Friends" (as The Incredible Hulk and the Amazing Spider-Man).  Compared to the live-action "The Incredible Hulk" television series from Universal, this series followed the Hulk comic books much more closely, particularly with regard to the Hulk's origin, the supporting cast (though Rio and his daughter Rita do not appear in the comics), and the heavy use of fantastical elements.  This was the second Hulk animated series: in 1966, the Hulk appeared in 39 seven-minute segments as part of TV's "The Marvel Super Heroes".

Rodger Bumpass: Rodger Bumpass (born November 20, 1951) is an American actor and voice actor.  He is best known for his long-running role as Squidward Tentacles on the American animated television series "SpongeBob SquarePants".  He voices many other characters on the show, including Dr. Forrest and various anchovies.  He also voiced The Chief in the animated series "Where on Earth Is Carmen Sandiego? ", and Mr. Besser, the school principal in the animated series "The Kids from Room 402".  Bumpass has many other credits in animated films, animated television series, and video games.

YooHoo &amp; Friends (2012 TV series): YooHoo & Friends is an American animated children's television adaptation of the 2009 Korean animated television series "YooHoo & Friends", created by David Feiss.  It is the second TV series based on the "YooHoo & Friends" franchise.  Changes to the original series were made to better fit western television, such as the series' premise, a story about a group of humans who are turned into animals by Father Time.  The series debuted on Cartoon Network in Latin America on January 8, 2012.

Uncle Grandpa: Uncle Grandpa is an American animated television series created by Peter Browngardt.  The series ran on Cartoon Network from September 2, 2013 to June 30, 2017.  It is based on Browngardt's animated short of the same name from "The Cartoonstitute".  "Uncle Grandpa" is also a spin-off of "Secret Mountain Fort Awesome", which was in turn a spin-off of the Cartoonstitute short.  It is produced by Cartoon Network Studios.

Hercules (1998 TV series): Disney's Hercules: The Animated Series is an American animated television series based on the 1997 film of the same name and the Greek myth.  The television series served as the pilot direct-to-video episode "".  The series premiered in syndication on August 31, 1998, and on Disney's One Saturday Morning on September 12, 1998.  The syndicated series ran 52 episodes, while the Saturday morning run ran 13.

Peter Browngardt: Peter "Pete" Browngardt (born August 12, 1979 in Sag Harbor, New York) is an American animator, writer, voice actor, and producer, who is best known for being the creator of Cartoon Network's "Uncle Grandpa", in which he also voices the title character, and its early spin-off "Secret Mountain Fort Awesome".  Browngardt has had prior experience working on shows such as "Futurama", "Chowder", and "The Marvelous Misadventures of Flapjack".  His main contribution to the "Adventure Time" series is storyboarding and writing the episode "Wizard".

The New Batman Adventures: The New Batman Adventures (often shortened as TNBA) is an American animated television series based on the DC Comics superhero Batman, and is a continuation of the 1990s "".  It was produced by Warner Bros.  Animation and aired on The WB from September 13, 1997, to January 16, 1999.  According to the reference book "Batman Animated", series writer Paul Dini originally wanted the new show to be titled Batman: Gotham Knights, but this idea was rejected by the other producers.  To better adhere with the prior DVD sets of the original series, the DVD release of this series was titled "Batman: The Animated Series Volume 4 (From The New Batman Adventures)" and was given the opening theme from the prior series.

Iron Man (TV series): Iron Man, also known as Iron Man: The Animated Series, is an American animated television series based on Marvel Comics' superhero Iron Man.  The series aired from 1994 to 1996 in syndication as part of "The Marvel Action Hour", which packaged "Iron Man" with another animated series based on Marvel properties, the "Fantastic Four", with one half-hour episode from each series airing back-to-back.  The show was backed by a toy line that featured many armor variants.

Spider-Man (1967 TV series): Spider-Man is an animated television series in the superhero fiction genre.  It was the original animated TV series based on the Spider-Man comic book series created by writer Stan Lee and designed by artist Steve Ditko, and was jointly produced in Canada (voice acting) and the United States (animation).  The first two seasons aired on the ABC television network, and the third was distributed in syndication.  Grantray-Lawrence Animation produced the first season, and seasons two and three were produced by Krantz Films in New York City.  The show starred Paul Soles as Peter Parker (Spider-Man).  The series ran from September 9, 1967, to June 14, 1970.

Peter Pan &amp; the Pirates: Peter Pan & the Pirates is an American animated television series based on J.M. Barrie's "Peter Pan" that originally aired on Fox Broadcasting Company from September 8, 1990 to September 10, 1991.  Repeats continued to air until September 11, 1992.  A repeat of the series' Christmas episode was aired on December 25, 1993.  The series was then on Fox in re-run form on weekday mornings from November 4, 1996 to March 28, 1997.  Reruns were then shown on Fox Family in 1998.

Supporting paragraphs: Peter Browngardt Uncle Grandpa
Answer: The Cartoonstitute