I exist. If I live in boundless and eternal universe, it's predictable and expectable that there are infinite number of TauPhies-like creatures inhabiting the universe. This is a possibility inspired by reason.
I exist. If I live in boundless and eternal universe, it's predictable and expectable that there are infinite number of SuperTauPhies that are stronger than Superman, older than Methuselah and wiser than Solomon. This is a possibility inspired by dreams.
I think that the real question is what is the dividing line between "TauPhies-like creatures" in the first paragraph and the examples in the second. What is it about the examples in the second paragraph that justifies labeling them as "dreams" versus simply "Tau-Phi-like creatures which are 10% stronger or 10% longer-lived" than the example we have here and now?