Ungoliant was a primordial being in the shape of a gigantic spider and one of the most terrifying evil spirits in the Lord of the Rings universe. She first appeared when Melkor requested her assistance in destroying the Two Trees: Melkor stabbed them with his spear and Ungoliant devoured the dew.
After this she went on to consume the Wells of Varda, which contain all the dew ever gathered from the Two Trees, and all the jewels in Foremenos, accept for the Silmirals. She demanded them from Melkor, yet he refused, leading to her attacking him. She was then driven of by the Balrogs, who were summoned by Melkor's call.
Her fate is unknown, though she is rumored to have devoured herself, leading to her death. Otherwise, she likely died during Dagor Dagoroth.
Powers and Stats
Tier: Unknown | At least 4-A, likely 3-B
Origin: Lord of the Rings
Age: As old as the universe itself, possibly older (She might be one of the Nameless Things, who are older than the Ainur)
Classification: Giant demonic spider (Her true origin is unknown, though she is said to be some kind of primordial force of darkness. Possibly a Nameless Thing)
Attack Potency: Unknown | At least Multi-Solar System level, likely Multi-Galaxy level (Overpowered a slightly weakened Melkor. Even while further weakened, Melkor's power was still the greatest of all things on Earth, making him stronger than the Valar. Took the full power of up to seven Balrogs in order to chase her off. Consumed the Two Trees, of which a single flower/fruit made the Sun and Moon. However, they are likely smaller than their real world counterparts. Devoured the contents of the Wells of Varda, which contained all the light of the Two Trees and out of which was made the stars)
Lifting Strength: Unknown | Unknown
Striking Strength: Unknown | At least Multi-Solar System Class, likely Multi-Galactic
Stamina: Unknown | Unknown
Standard Equipment: None notable
Intelligence: While she is certainly sentient, she seems to be motivated by little more than a limitless hunger
Weaknesses: Needs to eat an absolutely massive amount in order to sustain her power or she'll weaken from hunger (Rumored to have eaten herself, which was how she died. However, this has never been verified)
Key: Weakened | Full power