Antonia Edwards could be described in one groan-inducing adjective: Cold.

She rarely smiles, in the presence of others, though her work in analysis does occasionally bring a laugh or two to her face, and her body is often is cool, her eyes calm and jaw tight.

Running up the right side of her neck and down to her right elbow and back, Antonia has a burn which seems to bother her at times.

In costume as Zero, Edwards wears a white lab coat over sturdy trousers, with heavy boots and elbow length gloves. Her goggles, an invention based on her grandfather's technology, shimmer orange in the light.