Krull was a captain within the New Republic Defense Fleet, a male who served in 7 ABY. During a blockade of the sector containing Substation Grimdock, he was aboard the Tribulan Vort, the flagship. When Lando Calrissian and Han Solo, along with others, were departing the prison moon on the freighter Vermillion, Krull initially prevented their passage. However, Leia Organa communicated with him through a hologram, ordering him to allow them to proceed.