The Displacer Beasts (Joe and Dave) are two puma-like creatures who appear in Displaced Persons. They are supposed to be a random encounter, but evade this fate by hiding.
The displacer beasts appear to be puma or jaguar like, with the exception of two extra arms used to express emotion. They have phantom versions of themselves that appear in random places in each panel. Because a Flumph appears to be addressing the phantom when asking for directions, the phantom is thought to be the one that other beings can see (an illusion).