Vote on the ones you like. I will get to them eventually.

D.N.A-Draco is the son of Skull and Narsisca and is finally able to show his true self.(Drarry and RSk) (Harry Potter)

Kryptonium! Skull- Skull is one of the few survivors. (Supergirl/Superman/DC)

Shy! Skull- Skull is actually very shy and acts loud and obnoxious to hide the fact.

God! Skull- Skull is the land/wind god and Mizuki is his yokai. Nana's his sister and Lussuria is the former wind god.(Skull x Mizuki) (Kamisama Kiss)

Skull is Practically a Disney Princess. Animals are drawn to him.

Skull is an immortal former cop who was alive during the time of Primo. He and Alaude were married before Alaude passed away and left Skull heartbroken. He has a German Shepard named Heine.

Genie! Skull- Skull is a genie and Reborn finds his lamp.(RSk)

Skull is Klaus Havergreeves. After season 2, he ends up in a new world and hides his abilities. Byakuran exposed him. (Umbrella Academy)

Skull is Prussia. After a mix up of Hibird and Gilbird, both clouds are on the verge of raging to get their birds back. (Hetalia)

Skull is Lucy Heartfillia. She has pictures of her past and still has her keys, which her flames have claimed. Someone touches them without permission and she goes into a mini rage. (Fairy Tail)

Skull is Damian Wayne. Richard goes missing and Skull looks for him. After the case went cold, he disappeared and became Skull. After the curse breaks, Richard crashes a meeting. (Batman/DC)

Skull is Elaine. She misses Ban and King, but it's part of her duty to hold the curse. After it breaks, they find her and have a reunion. (Seven Deadly Sins)

Skull is Elizabeth. They don't remember their past, until they do.(Skull x Meliodas) (Seven Deadly Sins)

Skull is Celty and Shinra's kid. Shamal is their sibling.(Durarara)

Erika Walker is reincarnated as Skull, and after Takeshi is hit by a car, they tease him about it happening again and if it was him. Takeshi is Dota-chin. (Durarara)

Skull is California personified. Dino is Texas and Squalo is New York.(C.A x N.Y) (Hetalia)

Skull is Steven Universe. After Tsuna gets gravely injured at a battle, Skull heals him since the flames aren't working. (Steven Universe)

Skull was 13 years old when he got cursed. The others don't know this yet since he hid it with make-up and a whiney voice.

Skull is Lucifer Morningstar. One of his old clients who still owes him a favor causes a problem during a meeting. (Lucifer(Netflix))

Skull has multiple personalities. The others slowly meet them.(Skull x Arcobaleno)

Skull is Clair Steinfeld/Vino. The others meet his children. (Baccano)

Skull is Alfred Pennyworth. He is immortal and eventually retired from being the Wayne butler. After breaking the curse, he now decided to babysit the Varia and their mansion. (Batman/DC)

Skull is Meliodas, Viper is Merlin. After Viper is dared to show any tattoos they have, they show the boar on their neck and Skull realizes it's Merlin. (Seven Deadly Sins)

Skull is Gowther. While trying to understand more about human emotions, he ignores the off feeling Kawahira gives him and acts very different with them. (Seven Deadly Sins)

Skull and Belphegor are the children of Shizuo and Izaya. They haven't been in contact with each other so when they saw each other at a meeting, things go wrong. Vending machines are thrown. So are stop signs. (Durarara)

Skull is Lapis Lazuri. She is always moving, never staying in the same place for long. When her gem colors start showing, the others freak out. (Steven Universe)

Skull is Excalibur from Soul Eater. When he hears that Squalo is looking for his sword form, he gives him a clue and then they meet. (Soul Eater)

Skull is Bill Cipher. Skull was surprised when his flames went back to their usual blue color. And even more so when Dipper and Mabel showed up.(Billdip) (Gravity Falls)

Skull is Tony Stark. After Endgame, he gets reincarnated. (Marvel)

Skull is a butterfly. Son of Kawahira and Skywane. Married to Jushtine(who won't be a butterfly) and Mina is their daughter. (SVTFOE)

Skull is Saiki Kusuo and Lal is Teruhashi. Both changed after high school and Skull realizes who Lal is. (Makoto x Kusuke)(Kaido x Saiki) (The Disastrous Life of Saiki K.)

Skull is Honey(Nanbaka) and Fon is the one guy- They are playing truth or dare and Skull gets asked if he ever got arrested. (OHSHC)

Skull is from the BNHA universe. He has a cat mutation and giantification quirk. He is a member of the WWPC. Kyoya is their son.(Skull x Aizawa) (BNHA)