Keiji Inafune (Inafune Keiji, born May 8, 1965) was the head of Research & Development and Online Business at Capcom, best known for being the character designer of Mega Man and producer of Onimusha: Warlords and Dead Rising. In most game credits, he uses the name "INAFKING". Characters from the Street Fighter and Mega Man series have become some of the most well-known and recognizable game characters, making Keiji Inafune a large part of Capcom's success. In October 2010, Inafune resigned after a 23 year tenure, claiming he was dissatisfied with the future of Japanese game development. He currently works at Inti Creates. When it came to the design for the Rockman game (which was later changed to Mega Man in North America), Keiji, with other artists, developed all the character art and designs. Due to the small taskforce, he also constructed the characters into pixel form, as well as the game's respective logo, package design, and instruction booklet. As the Famicom was an early gaming system, only 56 colors were available for display, the majority of which were blue-tinted. This affected his decision to color the character blue (as a result, fans have nicknamed the character "the blue bomber"). The designs of Keiji's character were also heavily influenced by Japanese animation, and he notes that he took observations from other fictional characters present at the time, such as Mario and Astro Boy.