Moon is a girl from the Sinnoh region. She does not enjoy Alola's tropical air, stating that it doesn't suit her character. She isn't one to be fooled by others, easily seeing through Sun's deception and seeing through the lies of the Team Skull Grunts. Moon is a pharmacist and is proficient with making various types of medicine. Due to this occupation, Moon is very knowledgeable about various poisons, as certain kinds can be used to make medicine. In addition to the possible benefits of poison, Moon favors Poison-type Pokémon and finds them to be cute. Moon is also a skilled archer, which helps her get medicinal supplies by firing at the desired item with her bow and arrow.

Due to coming from a family of scholars, Moon prefers to use her intelligence to devise strategies in battle. As such, concepts she considers "unscientific", such as luck, tend to annoy her if they end up defeating her strategies. For her skills, she is given the title of "Mixer"