Question: Magneto is a character partly created by the comic book artist and editor of what nationality?

Context paragraphs:
Harvey Tolibao: Harvey Montecillo Tolibao (born June 25, 1981 in Bukidnon, Philippines) is a Filipino comic book artist.  Cover artist at Zenescope Entertainment, a comic book artist at IDW Publishing and artist at Nautilus Comics.

Howard Chaykin: Howard Victor Chaykin (born October 7, 1950) is an American comic book artist and writer.  Chaykin’s influences include the comic book artist Gil Kane and the mid-20th century book illustrators Robert Fawcett and Al Parker.

Jack Kirby: Jack Kirby ( ; born Jacob Kurtzberg ; August 28, 1917 – February 6, 1994) was an American comic book artist, writer, and editor, widely regarded as one of the medium's major innovators and one of its most prolific and influential creators.

Gabriel Bá: Gabriel Bá (born 5 June 1976 in São Paulo, Brazil) is a Brazilian comic book artist best known for his work on "The Umbrella Academy", "Casanova", and "Daytripper".  He is the twin brother of fellow comic book artist Fábio Moon.

Hagibis: Hagibis (meaning "rapidity", "velocity", or "speed" in Tagalog) is one of the first comic book heroes in the history of komiks in the Philippines.  Hagibis was created in 1947 by Francisco V. Coching, a Filipino comic book artist and illustrator who is considered as the “father" or "grandfather” of Filipino komiks.  Tarzan-like in appearance, the form of Hagibis had also been based on another early Filipino comic book hero, namely Kulafu who was created by another pioneer Filipino comic book artist, Francisco Reyes.  Hagibis became one of the longest running serials in the history of Filipino comic books, which was featured for fifteen years in the pages of "Liwayway" magazine.  An example story about Hagibis that appeared in "Liwayway" magazine was "Si Hagibis sa Ibang Daigdig" (Hagibis in Another World).  Sequels in komiks to the Hagibis series were "Anak ni Hagibis" (Child of Hagibis) and "Si Gat Sibasib" (Gat Sibasib).  Hagibis was later made into a movie with Fernando Poe, Sr. acting as Hagibis.

Marley Davidson: Marley Davidson (sometimes referred to as "Marley Davidson: Bronx Exorcist") is a fictional comic book character created by writer and comic book artist Sandy Jimenez.  It made its first appearance on June 15, 1995 in the self-titled independent comic book "Marley Davidson", which chronicled the exploits of a Jamaican ex-priest, operating as an exorcist and monster hunter in New York City.

Comics artist: A comics artist (also comic book artist or graphic novel artist, comic book producer, comic book illustrator, comic book writer, and comic book author) is a person working within the comics medium on comic strips, comic books, or graphic novels.  The term may refer to any number of artists who contribute to produce a work in the comics form, from those who oversee all aspects of the work to those who contribute only a part.

Magneto (Atlas Comics): Magneto is a fictional character created by Stan Lee and Jack Kirby.  The character first appeared in "Strange Tales" #84, in May 1961, just before Atlas Comics became Marvel Comics.  Even though the character name and creators are the same as the modern Marvel's Magneto, the Atlas Comics character is not related to Marvel's mutant.

Mark Badger: Mark Badger is an illustrator who has worked as a penciler, inker, cover artist, painter, and occasional colorist in the American comic book industry.  In addition to his career as a comic book artist, Badger is a political activist and organizer, often mixing the comic book medium with activism.  As an early adapter of digital tools to create comic art, Badger has taken to create web-based comics for the purposes of education and activism.  Badger also teaches "Programming, comic books, and web development" at San Francisco’s Academy of Art University.  Badger, a native of Cleveland, was diagnosed with multiple sclerosis at age thirty.  He lives in Oakland, California.

Stu Campbell: Stu Campbell (born 1981), also known as Sutu, is an Australian comic book artist, writer and interactive designer.  He is best known as the creator of the webcomic "Nawlz", an interactive episodic cyber punk comic book series.  He is perhaps most noted for his community work with Big Hart’s Yijala Yala project where he adapted Australian Aboriginal stories into interactive iPad storybooks and created the interactive comic "NEOMAD", producing a space opera based in the Australian outback.  Sutu also created the augmented reality comic book "Modern Polaxis".

Supporting paragraphs: Magneto (Atlas Comics) Jack Kirby
Answer: American