Ewan appears to be the leader of the Forest Humans that is instigating the execution of Attar and Seneca based on the sole fact that they're of the ape species. Ewan's fear is that Attar and Seneca cannot be trusted and that they'll lead the Apes of Ultimar to them. Ultimar's army tracks down the Forest Humans and in the heat of battle Scarak kills Ewan.
- Ewan is exclusive to the continuity of the Planet of the Apes comic books published by Dark Horse Comics.
- Ewan is exclusive to the continuity of the Planet of the Apes mythos.