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Honkai: Star Rail's Dr. Ratio wants to educate the whole universe in his battle against ignorance. That's quite the undertaking, but luckily for us, Dr. Ratio has plenty of time to join us in battle ...

UPDATE 12/12/2024: We have updated this page with additional information on the best Light Cones and Relics for Dr Ratio, and have added a new section on the best team compositions for the 5-Star ...