Complex sentence: Developed amongst The Second City improv comedy troupe, Grimley made his television debut the sketch comedy show "SCTV" in 1982, leading to popular success for both Short and the persona continued on "Saturday Night Live" and in various other appearances.
Split into simpler sentences: Developed amongst The Second City improv comedy troupe, Grimley made his television debut on the sketch comedy show "SCTV" in 1982, leading to popular success for both Short and the persona. Short continued to portray Grimley on "Saturday Night Live" and in various other appearances.