In 2007, Google, looking to expand its presence in Japan and Asia as a whole, partnered with au to develop emoji for Gmail, a project codenamed “Mojo”. Gmail’s design for the pile of poo emoji lacked a face and was circled above by animated flies. When deciding which emoji to include, Takeshi Kishimoto, Google’s Japanese product manager, went directly to the manager of Gmail and convinced him that the pile of poo emoji was the “most useful” emoji. This was corroborated by a statistical analysis undertaken by Google to determine which emoji were the most popular among Japanese users. According to Google software engineer Darren Lewis the pile of poo emoji was “way up there” in terms of popularity. Design for the emoji was left to Google Doodle artists Ryan Germick and Susie Sahim, who sought to put a “Google spin” on the existing emojis. They drew inspiration from the existing emoji designs as well as the character Poop-Boy from the Dr. Slump manga by Akira Toriyama. They limited themselves to a size of 15×15 pixels and colors used only in Google’s logo.