Nikita Pearl Waligwa, a co-star of Disney’s 2016 film Queen of Katwe, has died, according to a Deadline report citing Ugandan media. Waligwa reportedly died due to a brain tumor. [caption id="attachment_2303869" align="alignnone" width="720"] Nikita Pearl Waligwa, as Gloria in Queen of Katwe.[/caption] Queen of Katwe told the true story of Phiona Mutesi, a Ugandan chess prodigy rising from the poverty of the slum her family lived in.