We saw in Reverie how Charlos tried to enslave Shiraroshi, the princess of Fishman Island.
No one has stopped Charlos. Even the Holy Knights don't care. It would be a huge international scandal if the kings' daughters were kidnapped and enslaved by the Celestial Dragon.
Can the Celestial Dragons enslave female marines like Tashigi and CP0 members like Kalifa?
The Celestial Dragons consider themselves gods who are allowed to take whatever they please.
Do you think that sometimes the Celestial Dragon keeps the children they have with their commoner wives?
Ginny was kicked out of Mary Geoise when she was pregnant.
No one has stopped Charlos. Even the Holy Knights don't care. It would be a huge international scandal if the kings' daughters were kidnapped and enslaved by the Celestial Dragon.

Can the Celestial Dragons enslave female marines like Tashigi and CP0 members like Kalifa?
The Celestial Dragons consider themselves gods who are allowed to take whatever they please.
Do you think that sometimes the Celestial Dragon keeps the children they have with their commoner wives?
Ginny was kicked out of Mary Geoise when she was pregnant.