A foundling discovered by Joseph on the streets of Morioh in Diamond is Unbreakable. She develops a Stand ability that kicks in when she's scared—it renders her and anything nearby invisible, which makes sense given how traumatized she probably was as an abandoned kid. Joseph basically adopted her on the spot, and she's most at ease around him. The rest of the Joestar family came to care for her too, though their bond is definitely strongest with Joseph.
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