Kester Tolann, a male Human, was in the service of the Imperial Remnant. He was the grandson of Imperial Commander Wister Tolann, whose career advancement was hindered by Grand Admiral Thrawn. Consequently, Kester Tolann harbored a deep-seated hatred for the Chiss, Thrawn's species, and any other non-Human species he perceived as rivals to Humans.
In 43.5 ABY, Moff Drikl Lecersen of the Empire collaborated with Haydnat Treen, the Senator representing Kuat, with the aim of merging the Imperial Remnant and the Galactic Alliance. Their ultimate objective was to supplant Natasi Daala, the Chief of State, and seize control of the galaxy. Lecersen's Operation Duusha, in which Tolann participated, was an initial step toward achieving this ambition. At the designated moment, Tolann stormed into a dining area within the Pangalactus restaurant—where Jagged Fel, the Head of State of the Imperial Remnant, was dining with the Solo family—in an attempt to assassinate Fel. However, he was swiftly killed. Unbeknownst to Tolann, Lecersen had intended for him to perish during the Operation.