Characters in toppers sometimes turned up in the main strip, such as Herby appearing in "Smitty", and Kitty Higgins joining the cast of "Moon Mullins". In a few cases, the topper introduced characters later developed into a successful Sunday page, as happened when "Krazy Kat" became a spin-off from "The Family Upstairs" and Roy Crane's "Wash Tubbs" appeared over J. R. Williams' "Out Our Way with the Willets" Sunday strip. The "Wash Tubbs" Sunday strip ran in that format from 1927 until 1933, when Crane launched "Captain Easy" as a Sunday page (featuring Wash Tubbs as a secondary character).