Star Trek: 10 Worst Things Worf Has Ever Done

10. Maiming A Young Student

In Let He Who Is Without Sin (more on this episode in a moment) Worf confesses an incident from his youth to Jadzia. He recounts how, when playing football with other students in school, he and another boy went for the ball at the same time. Worf, larger and bulkier than his human counterpart, accidentally broke the boy's neck on impact.

This is easily one of the worst things that Worf was ever responsible for, however we hasten to add - it was entirely accidental. When Klingons and Humans come together, there is an immediate and obvious disparity in ability and size. Worf, the far sturdier of the two, was simply in the wrong place at the wrong time.

The guilt from this accident stayed with him for much of his adult life, informing his decisions on how he engaged with others. It was not always a positive guide - Worf made many mistakes in his career - yet this awful moment in his life helped to guide him in his actions. It certainly qualifies as one of the worst things he's done, yet could arguably also find itself in a list of incidents with the best outcomes overall.