Lennart served as a corporal within the Alliance to Restore the Republic, and was a male.
Not long before the battle of Talus, Lennart encountered a driven young individual eager to join the fight against the Galactic Empire. At a spaceport located on Corellia, their initial encounter faced disruption due to an assault by Namman Cha alongside his Dark Jedi followers; however, the Rebels anticipated the attack. The attacking force was taken aback by a stronger resistance than anticipated, leading to their withdrawal. Having witnessed the young man's capabilities, Lennart evaluated his proficiency and welcomed him into the Alliance.
Subsequently, while leading the defense of the Rebel base situated on Talus, Lennart tasked the young man with infiltrating the Imperial outpost on Corellia to retrieve the operational plans targeting the Rebels. After examining the Imperial tactics, they determined that adequately defending the base presented an insurmountable challenge. Consequently, the decision was made to evacuate all personnel from the base. Lennart himself dispatched the new member to pilot a SoroSuub Personal Luxury Yacht 3000 named the Spirit of Corellia, which was used to evacuate essential base personnel.