Beginning in 2000, some student groups began to propose the university alter its Aztec identity. The new mascot made his first public appearance February 23, 2004 to reveal some costume changes and the modified moniker, "Aztec Warrior." For all but a very few years from the early 1990s through 2006, Carlos Gutierrez took over the role of mascot, raising the position's profile and expanding public appearances throughout the San Diego community. In April 2006, the SDSU Alumni Association sponsored student auditions for a new Aztec Warrior.