"Force", known as "Mercenary Force" (~者傭兵部隊~mono Yōheibutai) in the OCG, is a series of Level 4 Warrior monsters with 1000 DEF. They debuted in the TCG set Legacy of Darkness with their first member, "Exiled Force" (released in Struggle of Chaos in the OCG). Later in the Galactic Overlord and Abyss Rising sets, new members were introduced. The series focuses on Tributing themselves to gain advantage.
Their history begin after the events of "Royal Oppression" and "Royal Prison". They travelled to various places and collected several new items and weapons, including: "Giga Gagagigo's" armor, "Draining Shield", "Emergency Provisions", "Pestilence", "Cursed Armaments", "Cursed Bill" and "Axe of Fools".
It should be noted that the number of the members has decreased after the use of such bad equipments, from over 10 in "Exiled Force" to only 4 in "Missing Force".
| Force || Effect after Tributing itself
| Exiled || Target 1 monster on the field; destroy that target.
| Missing || Target 1 monster your opponent controls; take control of that target until the End Phase.
| Nomadic || Target 1 face-down Defense Position monster your opponent controls; destroy that target.