In any case, the people that would have appeared are very likely to be the same as in the former dialogues – Timaeus, Critias, Hermocrates, and Socrates – and the unnamed companion mentioned at the beginning of the Timaeus might have unveiled his identity.
In any event, the individuals who would have been present are likely to be identical to those in previous dialogues – Timaeus, Critias, Hermocrates, and Socrates – and the unnamed companion mentioned at the beginning of the Timaeus might have revealed his identity.