User blog comment:Oknight/Hello Megan -- Why make the point Red Tornado is immune to telepathy/@comment-167456-20110313092613

You're thinking too long term. The revelation that Red Tornado is immune to telepathy was vitally important to the episode "Welcome to Happy Harbor", let alone what it may lead to down the road.

The revelation that Red Tornado is immune to telepathy, coupled with the fact that Mister Twister is immune to telepathy, leads Megan (and, perhaps briefly, the audience) to believe that Mister Twister is really Red Tornado. Furthermore, the show goes out of its way to specify that Red Tornado is immune to telepathy because he's an android. Later, Mister Twister's immunity to telepathy makes Megan realise that he's an android (making it okay for her to crush him under a rock).

The revelation has already paid off.