WARNING: Contains SPOILERS for Star Trek: Lower Decks, season 4, episode 9, "The Inner Fight."
Summary
In Star Trek: Lower Decks season 4, episode 9, it is revealed that Klingons possess pink blood, deviating from their usual red blood.
The decision to portray Klingons with pink blood was initially made in Star Trek VI: The Undiscovered Country in order to impart a distinct alien appearance and to circumvent a potentially higher film classification.
There have been suggestions among fans that Klingons may have blood color variations based on atmospheric conditions, despite commonly being portrayed with red blood. In the recent episode 9 of Star Trek: Lower Decks titled "The Inner Fight," Klingons were reintroduced with pink blood. Throughout season 4, a mysterious enemy has been causing trouble for the Federation, and it's finally revealed that former Starfleet cadet Nick Locarno (played by Robert Duncan McNeill) is responsible for the attacks on the uninhabited and remote Sherbal V, where the Lower Deckers find themselves stranded alongside various alien species. The purpose behind Locarno's actions remains unknown.
Star Trek: Lower Decks Brought Back Klingons’ Weird Pink Blood
On Sherbal V, there is a fierce fistfight between Lt. Beckett Mariner (Tawny Newsome) and the Klingon Ma’ah (Jon Curry), abruptly halted by a sudden glass storm. In the safety of a cavern, Ma'ah extracts glass shards embedded in his body, exposing his pink-colored blood. The Klingons have undergone significant transformations since their introduction in Star Trek: The Original Series, notably in their physical appearance. Initially, Klingons had smooth foreheads, but later iterations in Star Trek: The Next Generation featured ridged foreheads, presenting a more distinctly alien appearance. Star Trek: Discovery altered the appearance of Klingons once more, while Star Trek: Strange New Worlds seems to have reverted to a more traditional representation of the Klingon species.
