(WARNING: Loads o' pictures)
Personnality: He's rude and almost never takes anything seriously
Element: Artificial Steel Element
Height: 2 meter
Power(s): Can turn into Liquid and Pretty much shape-shift
Ghosty crashed on Okoto with powers over no element,so he modified himself his mask with various things he found on the island, so it can contain powers. after that he started his job as a toa,defending the villagers.
Ghosty was a toa created by the great beings as an experiment by mixing steel with liquified protodermis,and was put in the matoran universe for them to see what he will do. Ghosty didn't know what he was,and thus "decided" to be a toa,and help others.