A free test data generator and API mocking tool – Mockaroo lets you create custom CSV, JSON, SQL, and Excel datasets to test and demo your software.
Reading a draft journal article I came across Mockaroo – Random Data Generator and API Mocking Tool | JSON / CSV / SQL / Excel. This tool lets you generate testing datasets following different rules. You could generate a test dataset of personae with different configurations of personal characteristics for testing bias.
Neat!