Born in Raven Rock during the Enclave-Brotherhood of Steel war, he didn't knew his father who died fighting at the Jefferson Memorial under Augustus Autumn's orders. Jago was forced to leave with the remaining Enclave forces. He later became one of the best Enclave soldiers and was allowed to join the infamous Sigma squad to be deployed on the most dangerous and important missions. Lately, he journeyed to Navarro to prepare and initiate a gathering between western and eastern Enclave forces. He found a destroyed Navarro and was about to come back East when he met Enclave Remnants in the Mojave. He is actually searching for more of them to unite. Wherever he goes, ED-E follows him.