Countdown (G.I. Joe)
| The name or term "Countdown" refers to more than one character or idea. For a list of other meanings, see Countdown (disambiguation). |
- Countdown is a member of G.I. Joe from the Generation 1 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
G.I. Joe vs. the Transformers
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 of 2
IDW Generation 1 continuity
Agent Dubosky reported to General Colton about a mysterious being executing people seemingly at random in northern California. Secret Raiders
![]() Plot details for Concorde Hymn follow. |
Countdown's G.I. Joe dog tags were later recovered from Mount Olympus by the current Action Man, Ian Noble, who received them former G.I. Joe member Big Ben. Ian reported this to Mainframe, who said that Dubosky being there was impossible. He just spoke to Countdown two minutes ago. Concorde Hymn



