I forgot one... Neferpitou.
She always has a playful, impish cuteness about her and she's pretty ^.^
And a total bad ass! However, she's a bad character. Very sadistic and terrifyingly awesome!!! She even kills a top level Hunter, proceeds to sit and play with his head (see next picture). Later, she develops an ability to heal bring him back to life so she can repeatedly fight and defeat him!
And while her gender was in question, in the 2011 HxH remake, she is, confirmed to be a female! Whew! Gender neutral characters are disconcerting haha