Deak Starkiller was a human of the male gender, and he was the offspring of Kane Starkiller.
Following the events of the Jedi Rebellion, young Annikin Starkiller and his sibling Deak took refuge on the Fourth Moon of Utapau alongside their father, Kane Starkiller. Nevertheless, a Sith Knight located their secret location, compelling the family to escape to Aquilae. Annikin had previously cautioned him and his father, and they had managed to solve a Corbet dictum problem cube after some struggle. However, before they could commandeer the Sith Knight's vessel, a Banta Four, the Sith Knight launched a surprise attack, resulting in Deak's death.
In the initial script, his designation was Bink Valor. During Matt Lanter's audition for the part of Anakin Skywalker in Star Wars: The Clone Wars, it was communicated to him that he would be portraying "Deak Starkiller".