The duo's name is often spelled Elmo or ElMo, and is a combination of their aliases on the IRC message boards. (Scherer is "El Jefe" and Laikowski is "Mo Nose.") They formed for the debut of Ampers&nd—the duo improv show founded by Dave Furfero at the Magnet Theater—where they quickly became a staple and headlining act.
Michele's last improv show as a single woman, days before she married Stan Laikowski, was an El Mo show at Ampers&nd. The suggestion was "wedding."