In the past, Oranguru helped Abe when he got lost in the forest. After tasting Oranguru's Pinap Juice, Abe got inspired to put the juice on Aina's Kitchen's menu. Rumors of Oranguru and its juice soon spread throughout Melemele Island, causing people to begin visiting the Sage Pokémon, eventually resulting in the build of its bar.
Oranguru first appeared in Mallow and the Forest Teacher!, where it took care of Mallow, who had fallen down a slope. In the same fashion as with her father, it served Mallow its Pinap Juice and listened to her recent problems with Abe. The two soon heard the screams of Mallow's Steenee, who had been captured by Team Rocket. Through the use of Instruct, Oranguru was able to free Steenee. After Team Rocket was taken away by Bewear, Ash, his classmates, and Abe arrived at Oranguru's bar and reunited with Mallow. After reuniting with its student, Oranguru urged Abe to apologize to his daughter. It was later seen serving Nurse Joy and Officer Jenny inside its bar.
In I Choose Paradise!, Ash and his classmates noticed Oranguru on the boat to the Pokémon Paradise Resort, where it was revealed to be a regular customer of the resort. It was later seen checking in and resting in a hot spring near some Trainers and Pokémon. Near the end of the episode, it was nearby when Bewear and Team Rocket were resting in a hot spring after being defeated.
Oranguru is a kind and helpful Pokémon, as it brought an unconscious Mallow to its bar and also attended to her injured knee. It also stepped in to help her free Steenee from Team Rocket.
Oranguru is shown to serve any customer that visits its bar, human or Pokémon. Its customers often visit it to vent out their frustrations. However, Oranguru always remains friendly and understanding with its customers, and even comforts them, as shown in Acting True to Form! when it comforted Meowth. Despite its patient nature, Oranguru has been shown to sometimes get tired of its customers, as seen in the Poké Problem of SM087, when it disapprovingly shook its head and sighed while seeing off its energyless customers.
Oranguru has a good friendship with Abe. Abe has great respect for Oranguru, even referring to it as his teacher. He even decided to seek Oranguru's help in finding his daughter. While the two have a strong bond, Oranguru does not refrain from giving Abe a piece of its mind, as shown when it urged Abe to apologize to Mallow.