La Asesina del Emperador, la madre de Ben... Mara Jade Skywalker
Mara Jade by SketchyMcDrawpants on DeviantArt
Yep! EU should definitely be canon.... The legacy of the force was an amazing book series!
Sith Bushido: Mara Jade by ManBean on DeviantArt
Another really cool Mara Jade illustration, this is great inspiration for a kind of "black ops" character with Jedi/Sith training
Mara Jade eventually abandoned the Empire to marry Luke Skywalker. Together, they foster Daphne's daughter Kee Skywalker.
The most light side I have seen her portrayed so far
Mara Jade is The Emperor's Hand
Mara Jade harness set. Drop leg holster, Back holster, belt, hip belt, armlets, shoulder harness, Cloak collar