ok yes and no on the POTCO website located
here it says yes there is an undead captain although it is 99.999999999999999999% confirmed they are not in the game although peopel have seen them in Beta 1
i really hope they come out bc there is only 1 group with a high leveled enemies the rest are like 34 assassin lvl 26 officer (yes i know they go to 38 but thats only on flag ships
) and animals highest is lvl 35 stump