In 1 ABY Dekker was delivering a sample of the Berserker Virus, a bioweapon developed by Borvo's organization, to some Corellian buyers when he was intercepted by an agent of local criminal Kritus Morven. After a short exchange of blaster fire, Dekker was killed and the bioweapon sample fell into Morven's hands.
One of many potential, randomly-generated depictions of Dekker.
Dekker was a non-player character (NPC) in Star Wars Galaxies that was spawned somewhere outside of Keren when the player accepts Kritus Morven's fourth mission. As in many of the game's old quests, the NPC's gender, species and appearance was dynamically generated from a wide variety of possible appearances every time it is spawned. Only his gender is known as it was specifically mentioned by Morven.