I have long wanted to draw Wrex with some moment from his story, when his views on the Krogan and their future take shape, long before meeting Shepard and before the murder of his father.
Accordingly, here Wrex is stripped of most of his scars, except for three stripes on his face (it seems to me that they were obtained at the time of the initiation ceremony) and wrinkles.
During the mission, Wrex stumbles upon the skeletons of two Krogan, a mother and a child. It is no longer possible to identify where they came from, why they went so far, what caused their death and how long they have been here.
Wrex will remember this day forever.