Depending on which alien species were being talked about, this can either be a good or bad thing. But, 35 years later, “Transfigurations” is, if not a great Trek episode, certainly a decent one. How can a mortally wounded alien nicknamed “John Doe” (Mark La Mura) be regenerating so much of his body? The answer to this question is stretched out over the entire episode and ends with John Doe ascending to a higher plane of existence. In “Transfigurations,” TNG manages to, briefly, put one foot in each type of alien reality.