Speedee appeared on McDonald's earliest restaurant signs before the Golden Arches became dominant.
Speedee was a chef-like character associated with the McDonald brothers' original Speedee Service System. The name connected McDonald's with fast food preparation and service, rather than with a human founder or a later fantasy character.
The Speedee symbol was eventually displaced by the Golden Arches as McDonald's visual identity expanded. Ronald McDonald, Grimace, and the Hamburglar belong to later advertising campaigns and are not the mascot represented by the earliest branding.
This transition matters because McDonald's branding history did not begin with the familiar yellow arches. Speedee represents the restaurant's early emphasis on standardized speed, while the arches became the enduring corporate symbol as the chain grew nationally and internationally.