The CEO's brother (and co-founder) was caught cheating. From what I understand he is no longer involved with Zerodha.
He is a director and a "key managerial person". I have heard in a podcast that he is the CFO or CIO (not sure what a broker has a CIO for, so might be wrong)
Thanks for highlighting that! I think in the new economic cycle we should judge companies in a holistic manner, including the CEO’s personality and character because such things often affect how they provide value or screw over customers.