When the AdvanChips, Inc., factory in San Juan suffered an explosion due to improper storage of chemicals, Isabella Olmero was thought to be dead. But, as the fires died down and rescue crews went in, they found her, laying on the side of a power plant and breathing, but unconscious. Everyone chalked it up to an amazing miracle or a miraculous circumstance.

What really happened was her ubergene activated. She had been flung next to the power plant onto a live wire. She survived the fire because her body converted the electricity into some sort of shield. But as the fire died down and the water of the firefighter's efforts filled the area, she reverted and finally fell unconscious. When she found that a similar thing happened to her co-worker, Jorge Rivera, she knew that her dream of becoming famous might be achievable.

The pair secretly learned about their powers and learned how to control them. Isabella helped Jorge steal in hopes that at some point someone would notice her. But, the life of a superthief in San Juan was not what they thought it would be at first. Most of the people were poor. The rest were able to have security guards or call upon the police. Camera shots on TV were usually blurred, or if they weren't Chispa de Plata was always partially obscured.

Then came the day that Isabella found a note in a trash can. Jorge knew that better things were in store for himself and told his partner in crime of a plan to find two others with powers and motive. The four would steal the airship and find richer hunting grounds. Perhaps then, Isabella would find fame on a worldwide scale.

While the others of Los Piratas are largely motivated by the wealth gained by piracy, Isabella is in it for the fame. She has lobbied for turning off the stealth capabilities of Nube Nueve, but has always been voted down. If she knows that there are cameras around, she will make an effort to get directly in front of them. Inevitably, though, something will happen to either decrease her camera time or make her look bad during the camera time.

"Look here at Chispa de Plata!"

Chispa de Plata is an electrically powered woman. She is virtually immune to electricity and can convert it into energy and defenses for her own use. Then, she's likely to turn it on her adversaries.

Isabella always wears the top of fashion in designer clothing. The better the sparkle, the more likely she is to wear it. As Chispa de Plata, she wears a bright red costume with yellow lightning bolts all over it.