Although all characters, upon occasion, display weakness, or fallibility, though not for very long, only Lyta ever displayed vulnerability.

This made her something of an oddity in the Babylon 5 universe, IMHO. And to me the most appealing character.

Of course, she was not defenseless, on the contrary, her power, used both in the service of the forces of light, and Byron, showed her to be one of the most powerful this side of the Rim, and possibly the least respected.