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"Unit 0. A sabotage and assassination team."

Unit 0 was a covert team comprising of Gonrod-Isfall-Sonilli, Arbat-Elivat-Estoni, Aloth-Attamil-Gahar and Estrid-Corill-Darrath, who traveled to Earth under the guise of assassinating Esplin 9466 and his host Alloran-Semitur-Corrass, although its true motives were to introduce a prion virus to cripple the Yeerks as well as their human hosts. Aximili-Esgarrouth-Isthill briefly joined the team as a double agent, sent to spy on them on behalf of the Animorphs.


"We were offered the promise of pardon if we successfully completed this mission."
"And what about Arbat?"
"As far as I know, he is here to assassinate Visser Three. Gonrod is a coward, but an excellent pilot. His job was to get us here in a substandard ship. Mine is to kill Visser Three if Arbat can get me close enough to do so. With your help Arbat may succeed. Meaning that I succeed."
Aloth-Attamil-Gahar and Aximili-Esgarrouth-Isthill[src]

To be added