Seerow

From Seerowpedia

Seerow was an Andalite Prince who is known in Andalite culture as the one who gave the Yeerks advanced technology, which they used to start conquering the galaxy. He was the reason that the so aptly named law of "Seerow's Kindness" was passed. He was the father of Aldrea-Iskillion-Falan and an excellent scientist before he was exiled. He (and his wife and son) were killed by the Yeerks on the Hork-Bajir homeworld before they discovered the Yeerks were trying to take it over.