The Twin effect
Disclaimer: I do not own Harry Potter or NCIS. If I did, Harry would never married Ginny Weasley, would never befriended Ron Weasley and would not be sorted into Gryffindor.
A/N:This story will have major crossovers between Harry Potter Universe NCIS universe, the Marvel Universe, movie crossovers, book crossovers and misc crossovers. It will be slash, but nothing will be described in detail. I can not for the life write slash.
Summary: Identical twin brothers, wrong boy-who-lived. Harry's twin brother Liam is the false boy-who-lived. Neglected and hungry for affection, sixteen year Harry leaves the British Wizarding world to move to the United States of America. And Joins the Marine Corp. There he meets Gunnery Staff Sergeant Leroy Jethro Gibbs.
Who sees a troubled young teen in need of a stable home life and loving family. Convincing his wife of nineteen years Shannon Gibbs, the Gibbs family adopted the true boy-who-lived, knowing everything about the Wizarding world and the bloody war over in the British Isles.
Tens years without a sound from Lord Voldemort. Words comes to the Fighting 701st, an all Wizarding Marine Squad lead by Sergeant Harrison Jethro Gibbs that Voldemort in control of the British wizarding world. Then the Wizard Marine squad gets word that the Death Eaters attack the President's plane.
Presumed dead at the hands of Voldemort, the 701st retaliates by taking the waning war directly to the DE's, Harrison finds out the fate of his twin and family.
Cast of Characters:
Albus Dumbledore: Headmaster of Hogwarts.
Age: 189.
Hair color: All gray.
Eye color: Light Blue.
Height: 1.9 meters.
Weight 7.9 stones.
Merlin Level: 900(Mage)
Patronus: Phoenix
Familiar: Fawkes(Fire Phoenix)
Wandless Magic: waning
Minerva Megan McGonagall: Deputy Headmistress of Hogwarts
Age: 120
Hair color: browning Gray.
Eye color: Mid-range Blue.
Height: 1.7 meters
Weight: 7.1 stones
Merlin Level: 650(Average)
Animagus: Cat
Patronus: Leopard
Wandless Magic: able to use
James Charlus Potter: Flying Instructor
Age: 47
Hair: Brown
Eyes: Hazel
Height: 2 Meters
Weight: 14.3 Stones(Mainly muscles)
Merlin Level: 789(Above Average)
Animagus: Stag
Patronus: Stag
Lillian Marie Potter: History of Magic Teacher
age: 46
Hair: Dark red
Eyes: Avada Kevadra Green
Height: 1.4 Meters
Weight: 7.2 stones
Merlin Level: 800(Above Average)
Animagus: Parrot
Patronus: Doe
Severus Tobias Snape: Head of Slytherin House and Potions Professor
Age: 45
Hair: Black
Eyes: Dark Brown
Height: 1.9 Meters
Weight: 8 Stones
Merlin Level: 800(Above Average
Animagus: Asp Snake
Patronus: Doe
Filius Franklin Flitwick: Head of Ravenclaw House and Charms Professor
Age: Unknown
Hair: Bald
Eyes: Black
Height: 1.4 meters
weight: 6.9 stones
Merlin Level: 980(Mage)
Creature Heritage: Half goblin.
Patronus: Wolf
Wandless Magic: Many spells
Pomona Ester Sprout: Head of Hufflepuff house and Herbology Professor
Age: 65
Hair: Light brown almost blond
Eyes: Green
Height: 1.9 meters
Weight: 7 stones
Merlin Level: 789(Average)
Poppy Anne Pomphrey: Medi-Witch
Age: 69
Hair: Graying brown
Eyes: Blue
Weight: 7 stones
Height: 1.9 Meters
Merlin Level: 980(Mage)
Sirius Orion Black: Auror Captain
Age: 49
Hair: Black
Eyes: Grey
Height: 2.1 Meters
Weight: 13 Stones(Muscles)
Merlin Level: 790(Above Average)
Animagus: Grim like dog.
Patronus: Grim
Remus John Lupin: DADA professor
Age: 50
Hair: graying light brown
Eyes: Amber
Height: 2 Meters
Weight: 10 stones
Merlin Level: 600(Average)
Dark Creature: Werewolf(On Wolfsbane)
Patronus: Eagle
Harrison Jethro Gibbs: Marine Wizard Sergeant of the 701st.
Age: 26
Hair: Raven black
Eyes: Avada Kevadra Green
Height: 2 meters
weight: 12 stones(Muscles)
Merlin Level: 1000(Archmage)
Animagus: Ice Phoenix, Dire Wolf
Patronus: Stag, Dragon, Hawk
Wandless Magic: Proficent
Liam Orion Potter: Auror Captain
Age: 26
Hair: Raven Black
Eyes: Avada Kevadra Green
Height: 2 meters
weight: 13 stones
Merlin Level: 500(Average)
Animagus: Crow
Patronus: Raven
A Brief introduction on how Harry left the wizarding world.
Year One: Liam Potter "The Boy-who-lived" sorted into Gryffindor. Best friends with Ronald Weasley, Dean Thomas and Seamus Flanagan. Harry Potter sorted into Slytherin much to his parents and sibling surprise. Best friends with Blaise Zabini, Theo Nott and Aries Zuckerman.
Liam, Ron, Dean and Seamus called the Golden Four. Atypical Gryffindors. Loud, brash, hates everything Slytherin.
Harry, Blaise, Theo and Aries called the Silver Serpent Four. Normally aloof and incredibly quiet. Ignoring the house rivalry between Slytherin and Gryffindor, they befriended the Weasley Twins and Neville Longbottom.
The SSF found the Philospher's stone, befriended Fluffy, snuck Noberta out of Hogwarts to a private dragon reserve ran by the Luther Corporation.
At the end of the year Slytherin won the Quidditch cup and house cup all due to the four being in the top five smartest minds ever to walk the halls of Hogwarts.
Year 2:
With the surprising death of Quinurnus Quirrel at the end of the first year, the new DADA professor, a total scatter-brained man by the name of Gilderoy Lockhart took over the position.
A duel club formed by Lockhart and Snape. The entire school learned of the twin's ability to speak the language of Snakes. While the gryffs ostracize Liam, the Snakes found Harry's ability to be useful when dealing with the many snake paintings in their dorms.
When students began getting petrified, people automatically assumed that one of the two twins had opened the chamber. Terrified and angry, Liam withdrew from his friends.
Harry and his friends began to explore, hoping to find out who or what is petrifying people. When a Muggle-born Ravenclaw named Hermione Granger and the Gryffindor Prefect Penny Clearwater was petrified, the SSF found out the cause.
Learning that first year Gryffindor Ginny Weasley, the younger sister of Ronald Weasley was being possessed by the shade of Tom Marvolo Riddle, the four searched the library to find out what animal could petrify by a look.
Learning that a Basilisk roamed the school, the four began planning. Including their head of house in their plans, the five found out the entrance to Slytherin's secret chamber. Armed with roosters, blindfolds and a hefty amount of fear, they went deep into the chamber.
Emerging victorius over the Basilisk, the shade of Riddle as well. It almost had ended up in a bloodshed when the Basilisk managed to bite Harry, poisoning him. If Fawkes hadn't of heard the distressed scream of pain through the bond through the school, Harry would of died in the chambers.
But Fawkes had came to help, healing him. Essentially gifting him with healing tears.
Year 3:
With a new professor, Harry's godfather, Remus John Lupin, things settled for a quiet year. Until the end when word from the Unofficial Prince of Slytherin Draco Malfoy that their DADA professor is a werewolf. Resigning, Remus returned to odd jobs.
Year 4:
During the summer, invited to the Quidditch match between Ireland and Bulgaria, Harry joined his friends rooting for the Ireland team. With the winning match of Ireland, Harry returned home to being ignored. With the arrival of the Tri-Wizard tournament, the schools of Beaubaxton and Durmstrang. Finding out that the seeker from the Bulgarian Quidditch team is attending the tournament.
Along with the pretty half-veela teen. Viktor Krum and Fleur Delacour became the respective champions for their school. The hogwarts champions were Cedric Diggory and Harry himself. Shocked, Dumbledore's private thoughts were shaken. He had thought the saboteur would of added Liam's name, not the unknown Slytherin Potter. The boy-who-lived looked shocked that his own twin succeeded in the farce of the tournament and came out the winner after all the accusations thrown his way.
Surprising the entire school, Harry handed the prize money over to the Weasley twins and told them to use it to build their joke shop. Kidnapped by the ex-auror Moody, Liam was taken to a deserted cemetary where he learned Voldemort isn't as dead as he thought.
Year 5:
With the Ministry looking to discredit Dumbledore and Liam, Fudge sent his Under secretary to monitor the school. After several detentions with the toad-like woman, Liam was admitted into the hospital wing with a severe infection from the blood quill used.
When Harry had found out, he lost control of his normally calm emotions. No one to this day know what happened to Dolores Umbridge. She just upped and disappeared. When his friends questioned him, all Harry did was smirk and twirl the rather gaudy and ugly ring about his finger. A plain gold band with a toad emblem on the band.
Year 6:
With the new year upon them, Voldemort made his presence known by appearing in the Ministry along with many death eaters. Realizing that if Voldemort ever realized that he had the wrong twin, Harry made his escape. Converting his trust fund to Mundane money, he upped and disappeared into the night, escaping aboard a private jet owned by Charles Xavier, he escaped into the USA.
Settling down in a small house near the NCIS base, Harry settled into a well adjusted life style until one day he got bored and registered with the Marines. His trainers found themselves with a Prodigy, a well-rounded teen who instantly made friends and jumped ranks. When Gunnery Sergeant Leroy Jethro Gibbs met the raven haired teen, it was during a mission deep within the city. Rogue werewolves had taken over an orphanage and was willing to kill all the children.
That is when Harry walked in unarmed, to the unrealizing, into a den of monstrous beings. When he walked out, soaked to the skin in blood, leading children out of the war zone, Jethro realized that the young teen needed someone who would temper that suicidal tendencies.
With the help of the Sorcerer Supreme and the President, he gained the adoption papers of one Harry James Potter. Renaming the headstrong teen to Harrison "Harry" Jethro Gibbs. Gibbs and his wife Shannon showered the normally aloof teen with affection. This is the story of the 701st and their staff-wielding Captain.