The Most Almighty Unown's entry is also pleasantly sarcastic.
"Other Options: You can literally run any type of Hidden Power! Unown has an option for every type and its power knows no limits—other than being hit by any other opposing Pokemon, of course. Unown wouldn't want to learn any other moves anyway, because it does not need them. Hidden Power is all it needs to wreak havoc, cause despair, and spread fear amongst the opposing team. Using stronger moves such as the boring Fire Blast, Hydro Pump, or Draco Meteor would make Unown a little girl who can't fight and likes to risk a miss that could cost you a game. Unown is no gambler."