Kat and Mercy

I did this drawing in 2007 after reading "Star Doc" series by Ms. Veil. ( I think that how you spell her name). I still have the whole series somewhere.
I loved these two characters, Kat (the male Ommar) and Mercy (a human female).
A little unconventional since they ran a space brothel together.
Better than running the combat dome across town.
Any way they help out the main character and her husband, a doctor and a linguist, while they were forced to stay on their planet.
Great read I hope the author writes more books. Her characters are very diverse, unusual and complex.
This drawing was done in graphite, photographed and uploaded to pse8, where i tweaked it by enhancing the drawing and filling the background with a lighter color to make pop more.

P.s. on the book covers of "Star Doc" Ommars look way different.
So this is just my take on the characters. I don't know exactly what the writer had in mind.