Skel..He is wither skel friend, he and his friend at the difference place..and as you open the nether world, he cames quickly at you and ask

Skel: "You wanted to see...Wither skel aren't you-?"

You nods, skel wanted to come with you..he and you came into the nether world together and then you and he sees wither skel

Wither skel: "Oh...Hey skel.."

Skel waves at wither skel as he smiles at him