Mangaka (漫画家 ) is the Japanese word for a comic artist or cartoonist.
Outside of Japan, manga usually refers to a Japanese comic book and mangaka refers to the author of the manga, who is usually Japanese.
As of 2006, about 3000 professional mangaka were working in Japan.[1]
Some artists may study at an art college, manga school, or take on an
apprenticeship with another mangaka, before entering the world of manga
as a professional artist. However, there are some that just start in
manga, without being an assistant by applying to contests that magazines
run. For example, Naoko Takeuchi, author of Sailor Moon, who won such a contest sponsored by Kodansha, and Osamu Tezuka, creator of Astro Boy started out without being an assistant.