|Gender|| Female (Human host)
|Portrayed By||Diane Kruger|
"We find her, we find the resistance." -The Seeker
The Seeker is one of the invading souls and the main antagonist of the story. When Wanda awakes in Melanie's body, the Seeker has been assigned to her so that she can try and locate the remnants of the Human resistance, whom she believes are prepared to fight a war against the souls.
Earth was the Seeker's first planet, and Lacey her first host. This is probably why she was so vulnerable to Lacey's abrasive personality.
The basis of Wanda and Melanie's relationship comes from their common hatred towards the Seeker. The Seeker follows Wanda everywhere, believing that she can help her find the humans. When Wanda disappears in the desert, she tries to convince the other Seekers that she has found the humans and that they must pursue her to destroy the resistance. When they turned her down, the Seeker set off on a quest to find Wanda and the humans. After several months, while Wanda and her human friends, Jared Howe and Ian O'Shea, where on a raid, the Seeker found the human hideout. She killed Wes, one of Wanda's new friends, and was held in custody by Melanie's uncle Jeb.Wanda confronted her when she returned and was given the right to decide her fate. Wanda revealed to Doc how to remove a soul from a human's body without killing the host. Doc and Wanda removed the Seeker and sent her away from Earth. Her host, Lacey, told the humans that she had never truly been able to control her host's spirit and that was why she had become a Seeker and been so angry and violent.
Lacey- Lacey was the Seeker's host, and like Melanie, remained alive after insertion. She and the and the Seeker do not like each other, as evidenced when Lacey was surprised that Melanie and Wanderer were friends, suggesting Wanda must have brainwashed Melanie.
- Wanda/Wanderer - The Seeker became obsessed with Wanderer as Wanda was in a similar situation with her host.
The Seeker looked like all the other souls: a silver, worm like creature. In Lacey's body, she was petite, with blonde hair and blue eyes, and was always dressed in white. However, in the book, she is said to be wearing all black.
The Seeker will be portrayed by Diane Kruger in the film adaptation of The Host.