A little more info from their channels, in the order they were listed on the PV description:
Space / Tsukumo Sana:
- "As a side note, despite how she may look, she is quite chi... young." (guessing that's supposed to be "childish"?)
Nature / Ceres Fauna:
- "It is long said that her whispers, as an avatar of Mother Nature, have healing properties." (an ASMR specialist perhaps?)
- "While she is usually affable, warm, and slightly mischievous, any who anger her will bear the full brunt of Nature's fury." (and/or a rage gamer?)
Time / Ouro Kronii:
- "Her quiet, aloof personality has never changed over the ages, but she has developed a little bit of haughtiness and sadistic tendencies along the way..."
- "In her present form, she has become a sadistic, prideful warden." (mentions sadism twice, is this going to be central to her character?)
Civilization / Nanashi Mumei:
- "Due to not being created by the Gods, she was free to choose her own appearance, and decided to make herself owl-like, after the bird that symbolizes wisdom" (was wondering about her appearance, it doesn't really shout "civilization" to me - more like a wandering hunter or something... this feels like a character they designed separately and shoehorned into the narrative)
Chaos / Hakos Baelz:
- "The Gods appointed her Chairperson of the Council, but she mostly takes a hands-off approach as she has yet to accept the decision" (isn't it a bit strange for a Holo generation to have an explicit "leader", even if it's just in the lore?)
Side note, why does everyone think Space is supposed to be black? She's lighter than Nagatoro and Jahy.
Try being out in space, in view of the sun's radiation without the benefit of Earth's atmosphere, and see if you don't get a bit of a tan.
Side side note, does Hololive have permissions for the Civilization games? If Nanashi Mumei doesn't play one, that'll be a crime.