1. A method performed by a voice portal, comprising: receiving a call from a caller, where the call includes identifying information; identifying a first voice character, using the identifying information, to be used by the voice portal when audibly interacting with the caller; detecting a speaking voice associated with the caller through the voice portal interaction with the caller; identifying a second voice character using the detected speaking voice associated with the caller; changing from the first voice character to the second voice character when further audibly interacting with the caller; through interacting with the caller via the voice portal, automatically detecting caller behavior indicative of a situation where caller experience would improve upon an adjustment to the second voice character; and adjusting the second voice character in response to detecting such caller behavior; permitting the caller to select a third voice character; wherein, the selecting the third voice character comprises the caller selecting the background music and controlling the verbosity of prompts; applying the third voice character when further audibly interacting with the caller.