The Son of Death (Percy Jackson x Male Reader)

The Lightning Thief Cast

You as YN Ernten, Son of Thanatos

Weapon: Kurve

When not in use, it is a small emerald key and silver lock.  When YN puts the key into the lock, it changes into his weapon.  If the key is turned to the right it becomes a scythe, and if it is turned left it becomes a sword.  The lock is always kept on a chain around his wrist and the key is always in his pocket, and they will always reappear there if he loses them (like Percy's pen).  Kurve's sword form is Celestial Bronze, while its scythe form is Stygian Iron, meaning the scythe can harm monsters, Demigods, and normal humans.

Abilities: Can summon the souls of monsters he's killed to fight for him (they look like green ghosts), he also can't die or be affected by monster powers (like Medusa or Midas' touch) but he can feel pain and age, so he's not completely immortal.

Lucy Hale as Alexa Ernten, Daughter of Thanatos

Weapon: Sow

Sow is a Kopis.  When she's not using it, the sword turns into a Game Boy Advance, which she also plays Pokémon on.

Abilities: Can materialize weapons made of darkness that she can fire at enemies (the weapons can harm monsters and Demigods, just like celestial bronze) and the same immunity to death as Jake.

Noah Schnapp as Lucas Karula, Son of Hephaestus

Weapons: Forge and Anvil

Forge and Anvil are long daggers.  When he's not using them, Forge is a screwdriver, and Anvil is a wrench.

Abilities: He's fireproof, has super strength, and can manipulate fire (although he cannot create it like Leo)

Kathryn Newton as Sarah Wilson, Daughter of Ares

Weapon: Raze

Raze is a battle axe.  When she's not using it, the axe turns into a small lighter.  It transforms back into an axe when she lights it

Abilities: Sarah can summon a demonic two headed wolf, called Fenrir (I know that's a Norse name but I couldn't think of anything and Cerberus is already part of Greek Mythology) that she can ride or send to attack enemies.  If it dies, she has to wait until the next day before she can use it again (the wolf returns to life at midnight every day, although it only appears if she summons it).

And finally, Tom Hiddleston as Thanatos

Side note, here's a video of Tom Hiddleston dancing.  The man's got moves.

Walker Scobell as Percy Jackson, Son of Poseidon

Leah Jeffries as Annabeth Chase, Daughter of Athena

Aryan Simhadri as Grover Underwood

That's the cast.  Enjoy the story!