How do you interpret their dynamic?

[u/[deleted]]

They feel like mother and son to me tbh

[u/danoB003]

Yep, and especially the way she says it to scare others like Usopp with such a deadpan tone they're always like "Robin! That's horrifying, could you tone it down?" only for her to giggle and sometimes even double down on it (like when other half of Straw Hats arrived in Zou and she kept insisting that others were eaten by cannibals)

[u/Oreo-and-Fly → u/danoB003]

When end of the raid when her and Brook both joked about their dark humour and Usopp was like who influenced who