In 1990, Sega president Hayao Nakayama sought a flagship series to compete with Nintendo’s Mario franchise along with a character to serve as a company mascot. Several character designs were submitted as part of a contest. Among the designs was an egg-shaped man wearing pajamas who resembled U. S. president Theodore Roosevelt, drawn by Naoto Ohshima. According to Ohshima, the resemblance to Roosevelt was unintentional, saying he was influenced by a variety of characters. Retrospective sources have indicated Ohshima based the character on Humpty Dumpty and Mario. :301 The Roosevelt lookalike did not win the contest; rather, another Ohshima character, a hedgehog named Mr. Needlemouse—later renamed Sonic—prevailed.

Dr eggman coloring pages, As to get coloring-Pages is now a matter of minutes through the net, otherwise the parents or teachers were required to spare massive time and effort.