This article is about the G.I. Joe astronaut. For the Autobot Micromaster, see Countdown.
- Countdown is a member of G.I. Joe from the Generation One continuity family.
Countdown, a.k.a. David D. Dubosky, is a genius engineer, a chess master, and a friggin' astronaut. Foremost among his many skills, however, is his ability to bore his companions to tears.
Space missions with him must be tons of fun.
Fiction[]
Devil's Due G.I. Joe vs. the Transformers continuity[]
Countdown was one of the members of G.I. Joe who embarked on a Joe Colton-led mission to Unicron's inert body in order to police its surviving inhabitants. Black Horizon Part 2