Disclaimer: I own nothing and all characters are owned by J.K. Rowling.

So this is a response to Whitetigerwolf's Hellatrix Challenge. I saw it and just had to try it.

Requirements:

- Harry must die and meet his Grim Reaper (Check)

- Harry must be sent back in time by his Grim Reaper, for failing to fulfill his destiny (Check)

- The Reaper must make a mistake, and accidently put Harry in Bellatrix Lestrange's Body (referred to as Hellatrix for simplicity in this challenge, please don't rename Bellatrix Hellatrix when Harry becomes her) (Check)

- Due to this mistake, rather than fulfill his destiny himself, Harry is forced to help his younger self fulfill it (Check)

- Harry must either gain Bellatrix's memories and knowledge, or their personalities must merge somewhat (Check)

- Hellatrix must become frustrated with younger Harry's behavior at some point, and wonder if he/she was really that idiotic (Check)

- Harry MUST be straight before being put in Bellatrix's body (Though becoming Hellatrix can change this if you want, for whatever reasons), this means that while Hellatrix can be paired with man or woman, young Harry must be paired with a female if you do any pairing. (Check)

Recomended:

- FemSlash (Check)

- Young Harry/Hermione (Maybe)

- Hellatrix/Fleur (Maybe)

- Hellatrix/Amelia Bones (Maybe)

- Hellatrix/Narcissa (Maybe)

- Hellatrix/Sirius (No)

- Hellatrix/Remus (No)

- Hellatrix/Hermione (No)

- Hellatrix being a little unstable due to Bellatrix influence in her mind (Check)

- The Reaper informing Hellatrix how to remove the dark mark, or removing it themselves, as an apology for putting Harry in the wrong body

- The dark mark fading because Bellatrix, not Hellatrix, was who it was branded on

Harry Potter and the Grim Mishap

Chapter 1

Harry jerked up all of a sudden taking massive gulps of air as he looked around. The first thing he noticed was that he was in an office with dark gray walls. He also noticed a book shelf to the side of the room with a couple of books on it. He saw a large wooden desk with an empty chair behind it. He saw a dead looking potted tree in the corner of the room. Harry thought that it looked a lot like an office a judge or an attorney would use.

Soon Harry began to wonder how he had gotten here as the last thing he remembered was being in the Chamber of Death fighting off Lucius Malfoy when Bellatrix had cast an unknown spell at him. The next thing he knew was Remus yelling for him to get down and being pushed out of the way of the spell by Sirius. Sadly Sirius had pushed him towards the Veil of Death and his foot had been against a stone that caused him to trip. He had then felt as though he was being surrounded by misty water that was pulling him towards something. He could remember hearing horrified screams calling out to him before everything went dark.

Soon a woman in an all black pant suit, she also had on a black dress shirt entered the room. She had smooth pale skin and cold crystal ice blue eyes. She had long black hair tied up in a bun. She looked at Harry and shook her head in annoyance before she walked over to the desk and pulled out a file. She looked at Harry and said, "Please take a seat Mr. Potter. We have a lot to discuss as well as a lot of red tape and paperwork to go through."

Harry looked the woman wondering who she was, before slowly made his way towards the chair and said down. The woman looked at Harry and said, "First off Mr. Potter, I am your case worker Grim Reaper 147952. But for the simplicity of getting through all of this quickly, please call me Celeste. Now, I am a Grim Reaper, a case worker who takes care of the souls that wish to pass on to the afterlife. There are many of us as the Multiverse theory that if you make one decision, there is another you in another universe or dimension making a different decision. And before you ask, Death is a primordial being that exists beyond time and space. Also as of this moment, we are currently outside of time and space." She looked up at Harry to making sure he was following along. Sadly he looked as though he was still processing all of this.

She began reading over the file before stating, "What I currently have open and reading is your file. You were supposed to survive the incident in the Ministry that night. But since you died, you have caused quite a mess as both Fate, who is a colossal bitch I might add, and Destiny are throwing a tantrum. As you know, you currently have a prophecy tied to you and it was suppose to be completed within a few years. The contents of the prophecy as stated "The one with the power to vanquish the Dark Lord approaches… Born to those who have thrice defied him, born as the seventh month dies... and the Dark Lord will mark him as his equal, but he will have power the Dark Lord knows not… and either must die at the hand of the other for neither can live while the other survives… The one with the power to vanquish the Dark Lord will be born as the seventh month dies..." This means that you are suppose to defeat the self-proclaimed Dark Lord, Thomas Riddle. Now, since this prophecy was left uncompleted, you will be sent back to a younger version of you with your memories still intact. There are three time periods that you can pick. One is the summer just before you start Hogwarts, the second is just after your third year, and the final is the summer before you fifth year. I will let you think about it while I get everything else ready."

Harry nodded and truly thought about it, he immediately thought against the summer before his fifth year as that left no time to get ready for the fight against Voldemort. While the summer just after third year gave him more time, the summer just before fifth year gave him the most time to get ready for the fight to come. With that decision in mind, he looked up at Celeste and said, "I choose the summer just before my first year at Hogwarts."

Celeste smiled and said, "Good, you're not as dumb as you look. Now, you need some information before we send you back. You are a Master of Death. This means that you are chosen by Death to fight against those who try to cheat us. Being the Master of Death makes you harder to kill, for example you are immune to the Killing Curse and poisons take longer to become effective, but you can still die. You will also live longer than the average witch or wizard. You gain knowledge and also can easily use darker aspects of magic such as blood magic and necromancy. Your ancestor, Ignotus Peverell was such a champion. What you need to know is that Thomas Riddle has created objects that are used as protections against us, these objects are called Horcruxes. They are objects that one places a soul inside, through a fowl ritual that rips the soul apart into tiny pieces, and it keeps them tied to mortality. We know when a witch or wizard creates one, but not what the object used is, where they hide them, how many are created, otherwise we would not have need for the Masters of Death. We know that there are more than two since you destroyed one in your second year and when you came to us, your scar was cleansed of such a foul piece of magic." At the thought of Voldemort's soul being inside his scar, Harry turned several shades of green and looked ready to throw up.

Celeste looked at Harry and said, "No getting sick in my office. Now, I need you to also understand that once we send you back, we will immediately remove the soul fragment in your scar as well as give you the best Occulemency shields since we do not need those who would help Thomas and harm you to learn about all of this information. Now, if you understand all of this, I need you to sign a few things to state that you understand what I have told you."

It took almost an hour to sign everything and Harry's hand was bugging him, but he was ready to go back and stop Voldemort. He looked at Celeste as she said, "Now that all your paperwork has been filed, I need you to place your hand on the runestone and it will send you to your younger self. Once there, I will contact you and make sure everything has gone smoothly." A large stone soon appeared with a glowing misty blue rune on it. Harry carefully stepped forward and placed his hand on the stone. The rune glowed brightly before everything went black.

Here is Chapter 1. Please review and let me know of what you think.