Mr.本名岩本正勝,他的名字Mr.來源於「Mister Giants」(巨人先生): 戰後讀 賣巨人棒球隊的超級巨星球員,為了加入動漫界,1996年畢業於東京創形學校 美術系後,擔任村上隆助手,甚至成為他的首席弟子,他深受日本動漫文化影 響,作品充滿色彩與日本味的卡漫人物、以及蘿莉控和御宅族風格。他的畫風 主要是專注於日本住宅區中,隨處可見的可愛少女,繪製成動畫風格或電玩角 色風格。
Mr.'s real name is Masaatsu Iwamoto. His name is derived from "Mister Giants": a superstar player of the Yomiuri Giants baseball team after the World War II. In order to join the animation industry, he studied and graduated from the Art Department of Tokyo Creation School in 1996. Serving as Takashi Murakami's assistant and even his chief disciple. He is deeply influenced by Japanese animation culture which his works are full of colorful characters as well as lolicon and otaku styles. His style of painting is mainly focused on the cute girls that can be seen everywhere in Japanese residential areas, drawn in the style of animation or video game characters.