Star Trek Expanded Universe

D4 Green

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D4 Green (a.k.a Dean) was an engineer on the Federation starship Prometheus. (Star Trek: Prometheus)


Dean hatched in Nasat's largest treetop city's nursery and grew through his larval stage to adulthood never once meeting his parents, as is the norm with Nasats. Once he was full grown and had completed his education on Nasat Dean entered Starfleet Academy in 2374 where he majored in Engineering and minored in Security. Upon graduation in 2378 Dean was assigned to the engineering section of the USS Prometheus run by Lieutenant Commander Durgan Morlon.

Service JacketEdit

Note: For visual illustration of rank advancement only as D4 Green does not wear a uniform.
CDT1 (DS9-VOY).png
Yellow Cadet (DS9).png
First year cadet, 2374-2375
CDT2 (DS9-VOY).png
Yellow Cadet (DS9).png
Second year cadet, 2375-2376
CDT3 (DS9-VOY).png
Yellow Cadet (DS9).png
Third year cadet, 2376-2377
CDT4 (DS9-VOY).png
Yellow Cadet (DS9).png
Fourth year cadet, 2377-2378
ENS (DS9-VOY).png
Yellow (DS9).png
Ensign, Engineer, USS Prometheus, 2378
ENS (ENT).png
Yellow (DS9).png
Ensign, Engineer, USS Prometheus, 2379


  • The character of D4 Green was inspired by the character P8 Blue from the Starfleet Corp of Engineers series.

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