Galactigirls!

Sun:
https://2img.net/r/ihimg/a/img15/1590/9ri1.png

Mercury:
https://2img.net/r/ihimg/a/img199/2444/1c73.png

Venus:
https://2img.net/r/ihimg/a/img547/6281/16sf.png

Earth:
https://2img.net/r/ihimg/a/img10/1582/dlna.png

Mars:
https://2img.net/r/ihimg/a/img706/5929/o732.png

Jupiter:
https://2img.net/r/ihimg/a/img5/1051/k5pw.png

Saturn:
https://2img.net/r/ihimg/a/img12/926/euy2.png

Uranus:
https://2img.net/r/ihimg/a/img849/5171/lhjk.png

Neptune:
https://2img.net/r/ihimg/a/img819/9751/3bvv.png

Pluto:
https://2img.net/r/ihimg/a/img62/9546/nvet.png

Sunny Solaire: The Landlady of the complex, she's very serious, but also a bit fun loving. The Viewer often doesn't have enough money to pay the rent.

Mercury: The "little sister" to Sunny. She tries to be like her. They may be cousins.

Venus: The flirty girl. Earth's Sister.

Earth: Calm, Curious, a little ditzy sometimes. She's the protagonist and shows interest in all the other girls. ...And the Viewer.

Mars: The hot headed tsundere. Often gets annoyed with the viewer, but has a hidden soft spot for them.

Jupiter: The big breasted nice girl, most of the others are often envious of how big she is, in every aspect.

Saturn: The calm girl, tries her best to take care of her younger sister. She's a bit flirtatious, too.

Uranus: Laid back like her sister, although she often gets teased about her name and her backside, which often results in her getting very angry.

Neptune: The cold hearted girl. Often doesn't like visitors, and gets annoyed when the viewer bothers her. She fights with Mars sometimes as well.

Pluto: She's the feisty loli girl. Often gets angry because no one acknowledges her as an adult.