Skipper Redbeard was in the band of pirates that arrived in mianite. He was later discovered to be Capsize's brother and when she came back altered as a zombie, he volunteered to be the one to end her: 

"I must be the one to end her, please" he pleaded "Noooo noooo" cried CaptainSparklez "I must be the one to do it" He replied and with a heavy heart he did. He wished the adventurers farewell, saying he would stay to save his sister's deathplace. And he stays there to this day.