The Xavier Units were one of the distinct strains of clones created by The Collective to form a part of their Labour/ Military force. Xavier Units specialised in Stealth Combat. Some of their enhanced abilities included in depth of mele and munitions based weaponry, knowledge of the human anatomy and stealth operations. Xavier Units were known for their ability to move in the shadows and their lethal strike. A notable member of the Xavier strain is Xavier Rabia a high ranking officer in The Collective.