Encke is the lead fighter aboard the Alliance battleship Sleipnir. He's a no-nonsense leader who cares about his men and his partner, Keeler. Encke is suspected to be part of the shady plan with Keeler.
The bonus pages for the printed version of Chapter 3 is a scene with Encke and Cain
He is most likely named after Johann Franz Encke, a German astronomer after whom the Encke gap in Saturn's rings was named, among other celestial objects. The other gap in Saturn's rings is called the Keeler gap.
His mother is an alliance commander
He is painfully aware of Keeler's condition, has been since they were first assigned together.
He has a more than platonic love for his navigator, Keeler.