É Aristoi de Walter Jon Williams. Não há seqüências, mas Williams estava canalizando muito cedo Roger Zelazny na época, e se você gostou eu sugiro vê-lo.
The Aristoi (and some others) can split their minds into daimones, or "limited personalities", all which can operate as independent mental entities guided by the will of the main 'self' of the Aristos.
[...]
Gabriel and his companions are captured and imprisoned. [...] However, their plan is foiled when a previously hidden sub personality of Gabriel, that he dubs The Voice, uses his computer privileges to escape. Gabriel manages to defeat Saito and escape along with his friends.