Internationale is one of the best all-round operatives I've ever seen, but she's held back by an unfortunate abundance of social concern. If used correctly, she's the bedrock upon which you can build a winning team; just don't ask her about the plight of the global proletariat.
An ex-airborne scout in the Free Cuban Army, Valdes went underground after the re-annexation of Havana. Several years of freelance action against Corporate interests led to a considerable bounty on her head, and she joined Invisible for the chance to pay it off. Her tactical prowess is legendary, but her conscience can be a liability on and off the field.
During her work as a freelancer in the years following Havana's re-annexation and the San Francisco Accord, Internationale became a legend in the anti-Corporate underground. According to classified documents, she once cost Sankaku over 50 million credits in a single week of subversion and sabotage.
Some of Internationale's back-story is described in her datalog.
At the start of a mission:
These can also be found on the agent banters page.