The Paataatus delegation represented the Paataatus Hiveborn, the national entity for the Paataatus species. Prior to 19 BBY, the Chiss Ascendancy nation, located in the Unknown Regions, experienced incursions from the Paataatus. Consequently, the Chiss dispatched multiple emissaries to Nettehi, the Paataatus' homeworld, to engage with the delegation. An emissary issued a stark warning at the conclusion of these talks, informing the Paataatus that the subsequent Chiss starship visit to Nettehi would deliver "utter destruction."
Thrawn Ascendancy: Chaos Rising, released in 2020 and the initial book in Timothy Zahn's Star Wars: The Ascendancy Trilogy, included a reference to the Paataatus delegation.