Starship Eternia was over Castle Grayskill
Skeletor have in New Adventrue no sister!
Skeletor have a nephew (Adam of Grayskull / He-Man) and a niece (Adora of Grayskull)
NOTE: in NA exsist Adam of Grayskull nomore!
Adam / He-Man get a new alternative identity "Adam Sebrian"
Master Sebrian said: "This is my nephew, he came from Leviathan"