Mbutu was a specialized synthetic part of Fox Platoon stationed on board the Benedict in its mission to retrieve a xenomorph sample for the Terran Government in the early 2190's. Mbutu spent nine months in hypersleep for the journey out to the creatures' homeworld and awoke a few days out from the destination. Sometime during the journey, Easley went EVA with a live grenade and ended up being caught in the explosion, which some of the Marines found to be suspicious.