A personality-based theme may be provided to a device. An application program may query a personality resource file for a prompt corresponding to a personality. Then the prompt may be received at a text to speech synthesis engine. Next, the speech synthesis engine may query a personality voice font and recorded phrases database for a voice font corresponding to the personality and may alter the prompt text to conform with the grammatical style of the personality. Then the speech synthesis engine may apply the voice font to the prompt, which is then produced at an output device.