Agate (Olive)

Agate, nicknamed Olive by Sean, is one of his caretakers and member of the Elementals, living in ship 9Z5.

Appearance
Olive is visibly strong, being tall and bulky. She has olive green skin and eyes, with medium-length blonde hair. Her gemstone is located on her chest.

She wears silver-gray overalls with boots of a darker color.

Personality
Olive's personality can be compared to Sean's in the sense that they're both excitable, boisterous, non-judgemental and passionate. She never hides her feelings, instead speaking them out loud sometimes exaggeratedly, which can cause some situations to get awkward. She truly cares about Sean and Marine and is often affectionate towards them.

She loves fighting, which is why she trains Sean. Despite her friendly personality, during sparring sessions she can sometimes get really serious and strict without even realizing, and at first, thought Sean's human needs were simply excuses to slack around; however, she now tries to be more understanding. Believing that by treating Sean like an equal, she is respecting him, she is less worried about him getting into potentially dangerous situations he might not be able to defend himself from, as she thinks that he has to learn through the consequences.

Olive values freedom and the ability to choose and think, and doesn't have the prejudices that Homeworld used to before Era 3. Differently from Marine, she doesn't care much about organization, and can be really messy sometimes, such as when she and Sean had a "bubble war" with water bottles and made a mess on the training room in the chapter 2 of Outside the World. Olive doesn't judge people by their status, and simply by what they are inside and how hard they're willing to work.

History
Olive used to be a Homeworld Gem, but took part in the Rebellion, fighting for the Crystal Gems. However, she was captured by the Elementals before its end, which kept her from being corrupted alongside most of the others. She passed the test and started working for the Elementals by training other Gems to be guards, for example. Also, at some point, she was assigned to be Sean's caretaker.