The initial staff consisted of Madrox's best friend and special enforcer, Guido Carosella (Strong Guy) and former teammate Rahne Sinclair (Wolfsbane). Following the House of M, Madrox's newfound wealth from winning a "Who Wants to be a Millionaire"-style game show allowed him to recruit several of his former colleagues of the Paris branch of the now defunct X-Corporation. New members include Siryn, a powerless Rictor, M and Layla Miller, who has inserted herself into the group to keep them from discovering the truth behind the mutant Decimation, a catastrophic worldwide wiping out of mutant powers that took place during a storyline of the same name. The agency subsequently conflict with rival agency Singularity Investigations, after they ordered Siryn beaten and left for dead.