Chapter 1

A/N: This is a storyline that I've really wanted to try for a while. For those of you who don't know the story of Thanos, strap in and get ready for something crazy! Thanos falls in love with the Mistress of Death in his early years. As an outcast in his community Death is the only person giving him friendship and companionship. When his family kicks him out to atone for his practice of the dark arts he decides that to impress her and to gain his revenge he must go around the Universe and conquer or destroy every planet. Including the Guardians of the Galaxy plot that method is the infinity stones. Now, I am going to put my spin on this story!

Disclaimer: I don't own Harry Potter or the Guardians of the Galaxy but as far as the plot is concerned... they never had no Terran before! So I suggest you stay away, or my Ravager buddies'll eat you up!

When Harry had collected the Deathly Hallows for the final battle, he had no intention to keep them. He had broken the Elder wand in two and had thrown it away. He had lost the Resurrection Stone in the Forbidden Forest. The Invisibility Cloak had been a family heirloom, so he had decided to keep that one but without any work on his part he ended up keeping all three! The next wand that chose him made a slow transformation into the Elder Wand. When he pulled a river stone from his pocket, it had become the Resurrection Stone. Harry Potter had become the Master of Death, and there was nothing he could do to escape!

The first time he died Death simply resurrected him into his old body again. With his friends celebrating the end of the Wizarding War II it was easy to put the whisper out of his mind, "Three strikes Little Death! Say your goodbyes!" Of course, he didn't remember the warning until his friends were mourning over his corpse and his consciousness was speeding through the Universe.

It was impossible to know how long he had moved through space but he eventually came to rest at the feet of a throne. The first sign of danger was the material the throne was made from. Human bones! "Hello, Little Death!" For a moment the voice seemed to be in his head again but then a beautiful woman circled the throne. For a disconcerting moment Harry noticed the woman's green eyes, exactly like his own, and had imagined this woman to be his mother. "Oh but I am Little Death! In a way! You were made from the combined soul fragments of me and my predecessor. Soon I will give you a fragment of my soul to store, and you will eventually send it out into the Universe to find a host which will become the next Death!" Harry gaped at the woman but that didn't deter her, "I have a week in which to train you for your job and to warn you before I move onto the next world."

"Wait, warn me about what?"

The woman cast her eyes around the chamber, "Death is a bit of a cursed position. What do you know of Thanos?"

"I've never heard of it."

"Not it, who. Thanos fell in love with the first Mistress of Death and so now he fancies himself in love with each of us in turn. We have each taken a turn trying to persuade him that she is gone, but he doesn't want to believe it. He spends each of our cycles going from world to world, conquering in some sick courting game. Soon he will come to you to ask for your love. I may urge you to not accept but it will be your choice once I am gone. Life loving him will be painful because he doesn't want you as you are, he wants his lost love." Deciding to lay the matter to rest was simple for Death, she had a mission. For the following week Harry got a crash course in Reaper interactions and the proper filing of paperwork. The forms of the deceased were the first responsibilities Harry took on and then he began giving the Reaper's their assignments for the following decade. Things continued progressing this way until Harry had gained full control of Death's position and Death herself moved on.