Doctor David Marcus

Universe :	Prime Timeline
Name :	Doctor David Marcus [1]
Species :	Humans

A gifted scientist who was involved with the Genesis project, David was the son of Dr. Carol Marcus and Captain James Kirk. Carol never told David that Kirk was his father, and the boy grew up disliking Starfleet and everything connected to it. When Khan attacked the Genesis project David initially believed that Kirk was responsible, but quickly came to realise his mistake. Once the crisis was over Carol finally informed David of his relationship to Kirk, and the two finally established a father-son relationship. [1] David returned to the Genesis planet with the USS Grissom. He was stranded on the planet when the Grissom was destroyed by a Klingon vessel; the Klingons subsequently murdered David in an attempt to force Kirk to surrender. [2] After the death of his son, Kirk harboured a great hatred of Klingons for many years. [3]

Colour key

Canon source

Backstage source

Novel source

DITL speculation

Associated with

Associated with The Original Series

Played by

Series	Season	Actor	Film / Episode Title
		Merritt Butrick	The Wrath of Khan

References

#	Series	Season	Source	Comment
1			Star Trek II : The Wrath of Khan
2			Star Trek III : The Search for Spock
3			Star Trek VI : The Undiscovered Country

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Last updated : 23 Oct 2025