Unlike his freely procreating brothers Jupiter and Uranus, the Roman god Pluto is monogamous, and is rarely said to have children.
In the Greek version of the mythology, in Orphic texts, the chthonic nymph Melinoe is the daughter of Persephone by Zeus disguised as Hades (Pluto), and the Eumenides ("The Kindly Ones") are the offspring of Persephone and Zeus Chthonios, often identified as Hades (Pluto).
The Augustan poet Vergil says that Pluto is the father of Allecto the Fury, whom he hates. The lack of a clear distinction between Pluto and "chthonic Zeus" confuses the question of whether in some traditions, now obscure, Persephone bore children to her husband.
I'm not sure exactly how the term "siblings" can be applied to an inanimate object, so the question becomes essentially meaningless. Yes, no, maybe, only on Thursdays, pick an answer you like; I'm sure you can find a way of justifying it.
no Pluto does not have kids
Plutos temp is -223 c to 40 c
plutos core kills us from coldness
Yes. Charon, Plutos largest moon, is about 1200km in diameter, while Plutos diameter is around 2322km, so Plutos diameter is about twice the size. In terms of volume though, Pluto is around 7.4 times as big.
Monkeys
it rotates to the right
2.03g/cm3
meh
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Yes it is
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Pluto has no atmosphere
1,134 km