Yeerk Peace Faction

The Yeerk Peace Faction, usually called Peace Movement, is an undercover organization in the Animorphs science fiction series. The Yeerk Peace Faction is composed of Yeerks who wish to make peace with their hosts. These Yeerks only take voluntary hosts with whom they have a friendly, cooperating relationship, or else no host at all. Sometimes members are discovered and like Aftran can be trapped in a morph forever to survive and escape. Rachel realises that there is a way out for the Yeerks who want peace - true symbiosis as opposed to parasitism, like the Iskoort.

For more information on the Yeerk Peace Movement, see books #19 The Departure, and #29 The Sickness; it is also very heavily mentioned in The Familiar when Jake "morphs" through time to when the time when the Yeerks have won the war. The Yeerk controlling Cassie is part of Yeerk Peace Faction.