Uli Da was the original Vessel of the Shard Ambition. She is referred to as female in the first Oathbringer letter sent to Hoid.
She is Sho Del, one of three races on Yolen, and an example of a non-human Vessel. She was present on Yolen at the Shattering of Adonalsium.
After the Shattering, Rayse (Odium) immediately felt threatened by Ambition, eventually finding her in the Threnodite system and clashing with her. Although she fought back, she was mortally wounded, leaving "chunks" of her power behind; the struggle warped the entire solar system. Ambition was later Splintered in another location under unknown circumstances. Uli Da's death and the Splintering of Ambition have had effects across the cosmere.
The author of the first Oathbringer letter, presumed to be Edgli (Endowment), expresses contempt for Uli Da and is happy that she was killed.
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