The collaboration character first appeared in the 4th episode of the TV anime 3rd season
Yotsuba & Danboard Official Store, the official online store dedicated to Kiyohiko Azuma's Yotsub&! manga franchise yesterday started advance sale of the "Miss Monochrome Danboard ver." figure. The collaboration character was designed by the original manga author Azuma himself and appeared in the fourth episode of the Miss Monochrome The Animation third season aired in Japan on October 23, 2015. The price for the 53mm-tall ATBC-PVC/ABS figure is 2,000 yen (about 19 US dollars).
Original design by Kiyohiko Azuma
A scene from the anime episode
Source: press release
(C) Miss Monochrome Production Committee
(C) KIYOHIKO AZUMA / YOTUBA SUTAZIO