Worst warrior cats character?

SPOILERS FOR ANYTHING UP TO THE BROKEN CODE

My least favourite character is Greystripe. >!Now, GreyPAW is great, but Greystripe is an idiot. He leaves Fireheart in an extremely difficult situation, having to train Brackenpaw for him AND cover for him while Graystripe has a lovely time flirting with his girlfriend. He is also a bad dad and doesn't care for his second litter of kits.!<

Who are your least favourites and why? (I am expecting at least 1 comment saying Clear Sky, Tom, or Onestar)