Only Ring Heroes are able to claim the One Ring once Gollum has been found and killed. If the Ring is not claimed by a Ring Hero after a certain amount of time (click the Ring to see how long it has left), Gollum will be brought back to life and retake the Ring, wandering cloaked throughout the map again.
Gandalf The Grey (Gondor/Arnor): If Gandalf acquires the One Ring while being Grey he will use the ring for his own needs and become "corrupt". He will weaken allies in his presence and will damage them over time.
Gandalf the White (Gondor): Should Gandalf acquire the ring while being White he will use the One Ring for the well-being of all Men. Heroes and units close to Gandalf will be healed.
Boromir (Gondor): Should Boromir take the Ring, he will use it to defend Gondor and prevent it from being destroyed. He will be able to permanently summon strong units, but the One Ring will kill him after a certain amount of time. When the One Ring takes his life, the player will not be able to use any of the Gondor buildings (will not be able to build anything) for 30 seconds.
Arvedui (Arnor): Arvedui accepts massive losses in battle to find the worthiest soldiers, and his new abilities support heroes while weakening normal troops.
Theoden the Corrupted: Theoden becomes Grima's puppet. He follows Grima as a mindless slave. Grima becomes controllable and can use the same abilities as Corrupted Theoden with much stronger effects.
Glorious Theoden: Theoden can choose between 4 abilities, each granting a special effect but weakening his armor and speed permanently.
Queen Of Storms (Galadriel): Should Galadriel acquire the One Ring and use it, she will become the Queen of Storms, gaining many new destructive abilities. Mallorn Trees will be able to research a useful defensive specialization. However, allies will be rebuffed while inside the fortress and while near to Galadriel.
Queen Galadriel: If Galadriel rejects the One Ring, she will become blessed by the Valar. She will gain improved versions of her regular abilities, along with a new ability and leadership. Frodo and Sam will also become recruitable from the Citadel. Frodo will have the Ring.
Elrond (The Fellowship): When Elrond takes the Ring, rather than use it for himself, he sends out the Fellowship of The Ring as a Hero Horde, able to utilize many abilities. The Ring is dropped only when every Fellowship Hero has fallen.
Saruman: Saruman will randomly become either 'Saruman the Blessed” or “Saruman the Cursed”. As Saruman the Blessed he will become lordly, alike to the power of the Valar, and gain powers of Lightning and Air magic, as well as infantry support skills. As Saruman the Cursed he will become twisted and dark, gaining powerful Fire magic and structural support skills.
The Necromancer: The Necromancer is Sauron himself in a Necromancer form. When he takes the One Ring back he will take his old form as the Dark Lord, but not all of his powers will be restored. He needs the ability Power of The Past Ages to restore all of his powers, cast a shadow over Middle-earth and start the Fourth Age as the Dark Lord, ruler of all.
The Witch King: If the Witch King receives the One Ring, he does not gain any new abilities; instead, he will cast an everlasting winter on everyone and everything. Buildings will freeze, causing 25% less production from resource buildings and slower unit training times from military buildings. On Angmar's own and allied buildings, the ice around them will make nearby enemies freeze.
- Once in Ring Hero form the heroes can actually pick up the Ring, although that cannot be done normally and can only be done with custom maps