Seattle is a major coastal seaport city and the seat of King County, in the U.S. state of Washington.
Seattle was attacked by an unknown Kaiju at an unknown date. Romeo Blue, a Mark-1 American Jaeger piloted by the Gage twins, is deployed to kill it. While Seattle sustains less damage than other cities such as San Francisco during the attack the Kaiju is killed at the cost of the Jaeger and its pilots.
During Stacker Pentecost's debriefing with the United Nations on the failure of the Jaeger Program, Seattle is one of the mentioned cities affected by the evolving strategy of the Kaiju.