Mamiko

Mamiko is a scientist working for a secret organisation (think about a SCP thing). Well, she's really working for herself but she needs funding ! her current goal is to create the ultimate life form, no less. During her researches she made a clone of herself who is kind of her daughter now ?  

She's also an aquatic-plant-based alien in disguise. Her work on modificated lifeform is linked to her desire to help her species.

Her respiratory aid is actually filled with water as she's an aquatic specie who needs to stay hydrated as all time. It's linked to a water bottle is her little backpack.