Sixth Timeless Child
From Tardis Wiki, the free Doctor Who reference
The Sixth Timeless Child was one of the many incarnations experimented on by the First Tecteun while she tried to learn the secrets of regeneration. (TV: The Timeless Children)
Appearance
The Sixth Timeless Child was a young-looking girl with brown styled hair.
Like her predecessor, she wore black leggings and a grey-blue robe with a white sash and a high collar. (TV: The Timeless Children)