Nichols (Doctor)

Doctor Nichols was a plant manager in 1986 at Plexicorp in San Francisco.

In exchange for use of his facilities to build walls for his whale tank, Montgomery Scott gave him the formula for transparent aluminum. Scott brushed off concerns that this would result in a change of the timeline, asking "how do we know he didn't invent the thing?". Nichols had recently quit smoking prior to Scott and McCoy's visit. 

Nichols Nichols (Dottore)