TerraFirst! (TF) is an eco terrorist organization.
In the beginning TerraFirst! was a radical movement which started in an anonymous online board. It's members are rumored to be vast, but no one is certain as to the real number. People viewed it as a joke, until random acts of violence started being done and TerraFirst! claimed responsibility.
Several players claiming to be part of TerraFirst! were arrested by the US govt. following the attack on the Shiawase Nuclear facility, however it was discovered from them that they had no association with TerraFirst! other than co-oping the name and being paid large sums of money by anonymous donors. US Govt. officials released statements claiming TerraFirst! to be a hoax and the organization didn't actually exist, but rather, multiple copycats were spawned from the concept of TerraFirst! using the name to curry favor with the public, which still viewed them positively as there were many opponents to the starting of the Shiawase Nuclear Generator.