The most in-depth article you will probably ever read on Earthbound

Pretty deep. Also, the explanation of Pokey’s evilness just makes him more creepy.

Spoilers.

Pokey no longer considers Giygas his boss or his better, but as something more of an attack dog or prop. This is no longer about what Giygas wants. Between the two antagonists, Pokey is the only one with any control or awareness of his actions, and what he wants is to see Ness beaten and humiliated − even if it means destroying all existence in the process.

Pokey is to Ness as Francis is to Pee-wee Herman.