Cameo of ex-Gintama editor (1st generation) (大西 恒平 Oonishi Kouhei), Jump Editor assigned to this manga series for about 4 years, manga chapter 1 (2003 Dec) to chapter 188 (2007 Nov). Now in charge of among other series, One Piece.
Depicted as very short in height, but with very big male genitalia. Possibly a pun on his name since the manga author changed his name from 大, literal meaning 'big', to 小, literal meaning small. Full name as depicted in Episode 100 is 'Konishi Kouhei'.
In Gintama world, he is the editor-in-charge for the Gintaman series by manga author Amachi Hideaki.