Sabo is on friendly terms with his colleague Koala, having worked with her since they were both young teenagers. As a result, she became very upset and cried over the thought of Sabo leaving the revolutionaries after regaining his memories, and knows about his history with Luffy and Ace and his regret about not being able to be at the Battle of Marineford. Koala is happy for him when he finally reunites with his remaining brother, and also attempted to comfort him over any lingering feelings of regret he may feel over his inability to protect Ace – showing some closeness between the two. She also attends his battle at the Corrida Colosseum.
However, she is constantly frustrated with his selfish attitude in regards to disobeying orders as seen when she berates him for potentially drawing the ire of the Marines by fighting one of their Admirals.