Despite sitting together at the same lunch table, the "rejects" were rarely seen together in the other episodes. It can be implied that none of them are actually friends, but rather they merely sit with each other.
One of the rejects, Dirge, clamed to be born with webbed fish toes, which made Zim change his mind about befreinding him. Later in the episode, after Keef claimed that the squirrel was Zim, he bends down to untie his shoes, claiming it was "really neat". This made one of the other rejects, Matthew P. Mathers, run away screaming.
Dirge is most likely named after cartoonist and Invader Zim writer Roman Dirge.