Crossover, Harry Potter Addams Family. Harry had a younger sister, born premature left in St. Mungos she is left in Foster care then adopted by the Malfoys who are not nice to her at all. Enter the new defense professor at Hogwarts and her life will never be the same.
Iris, that was her name no matter what the filth who dared force her to call them mother and father. She had grown up in magical foster care until the age of seven, then she was adopted by the Malfoys. You would think they would be smart enough to treat her decently. They were, they took her name Iris and stuck her with the horrid name of Media Malfoy, and she hated it and them. She had been cursed when she tried to keep her old name so on the surface she submitted.
Deep down her hatred grew, when Draco blamed her for things he had done, she wanted to curse him. She refused to cry out in any of the unjust punishments and the elder Malfoys realized that trying to get her did not work. She learned to organize her mind and found a salvation when she became an accidental Animagmus in the form of a red hawk. On the days she was locked away in her room with only Dobby bringing her bread and water to eat, she would slip out and go to the muggle world. She wanted to watch the magical world burn as she had not seen a good side to it as of yet.
When Draco was to go into second year, she was to start her first year. To keep up appearances they did buy her new things, however in the Luggage store the storekeeper took pity on her and slipped in several compartments for her and an "escape package" as well. At the bank a goblin slipped her a ring and a note. Iris hid those and once back home she was "rewarded" for her good behavior by being allowed to at with the family. As if that was a reward for her. Back in her room she saw the ring was for the Fleamont family and the note was her ticket to freedom. On September 1st she was clad in her school robes with her trunk in her satchel ready to go. She knew why the Malfoys had adopted her, with her long curly black hair and violet eyes she did look like Bellatrix, they though she was her daughter.
"You will get to Slytherin girl or you are disowned and I will personally see your life ruined." Lucius snarled at her.
"Of course father." Iris said.
"I will see that she behaves as a proper pureblood." Draco said, "you can count on me."
"You are not welcome at Christmas." Narcissa said coldly.
"Of course mother." Iris said coldly.
They Apparated to the station and Draco shoved her into a compartment with him. His friends shuddered at the absolute coldness in her eyes. She sat nearer the door and took out Hogwarts a History to read. Draco was thinking on how to make her pay for her insolence. Finally they arrived at Hogwarts and with a shove Iris made her way to the boats. If all went well she would not even be sorted as a Malfoy. The goblins had calculated the funds the Malfoys had spent on her and were sending the money to them from her accounts (and it was really a pittance) and they would get it around the time she was sorted.
She loved the school, it was everything she dreamed of and more. The magic accepted her at once and the love she felt from the ancient castle was amazing. McGonagall lingered on her for a moment as she gave her speech and then lead the students forward. Draco watched his sister, he did love her, truly and he was no dummy, he knew what she was doing, he had found the letter but refused to tell his parents. Mentally he wished her luck, after today she was free and he felt sad, he had wanted to treat her better but both his mother and father forbid it. Now they would find out they had messed with the wrong family. Oh well, he would bring the Malfoy name back from this somehow.
"Fleamont, Iris." Was called and Iris walked up, it had worked! She took a seat with a smile on her face as the hat was lowered.
"Yes very Slytherin of me, but you know where I must go." Iris said, "do you think I am related to Harry Potter?"
"Oh not sure my dear, have you had a blood test done?"
"My guardians would not allow it, but now I am here I will request one." Iris said," now Gryffindor if you please."
"Oh yes, of course! Gryffindor!" The hat shouted to the great hall.
Iris hopped off the stool, shot Draco a smile and headed to her new house table. Though still very young she was the head of house Fleamont and she could request McGonagall to offer her sanctuary in the castle. After the sorting she stood up and Severus Snape raised and eyebrow, he knew what was coming. Would Harry Potter finally have the brains to ask the same? Merlin he was so like his father and it seemed none of Lily had come through yet. Mortica Addams smiled from the Defense Against the Dark Arts post. Something was going to happen that was going to make her happy, what with her children grown and married she was bored and what better thing to do that take a curse post in an old haunted castle in Scotland?
"I Iris Fleamont, once adopted daughter of house Malfoy who went by the name of Media, as the new head of house Fleamont but not of age as of yet do request from my head of house Gryffindor sanctuary." Iris said.
"I Minerva McGonagall, deputy headmistress, head of Gryffindor and transfiguration professor do grant your request."
"I Filius Flitwick, deputy headmaster, head of Ravenclaw, charms professor second the request."
"I Pomona Sprout deputy headmistress, head of Hufflepuff, herbology professor do third the request."
"Fine, I Severus Tobias Snape, deputy headmaster, head of Slytherin, potions professor and youngest potions master in three hundred years, do fourth the request."
"Oh so many deputies." Morticia said, "any reason why?"
"Paperwork, though not so much now." Severus said, "your idea of helping Deloris Umbridge fulfill her lifelong goals was good, she does like the paperwork set before her.
"As the headmaster of Hogwarts I don't stand on ceremony and alas my titles are too long, but as the four are united you have sanctuary here."
Iris beamed and took a seat right between two Weasley twins. By the end of the meal she was fully unscathed and Fred was now a bright pink with lime green hair and George had donkey ears with blue hair and neon yellow skin. Iris looked innocent and the whole of Hogwarts was impressed. Fred and George adopted her on the spot and claimed she was the long lost twin of the first best Weasley child Ginny.
The next day Morticia left the chambers she shared with Gomez and fairly floated down the stairs, she was clad in a deep maroon gown her long black hair falling straight. Before her stood Lucius Malfoy, oh such an evil sort, he was not attractive because he was so evil. She and Gomez played at it but they never would hurt anyone and Gomez was a curse breaker though he told their muggle neighbors he was a banker. He came down clad in one of his trademark suits and looked quite frankly far better dressed than Lucius did.
"Ah hello!" Gomez said, "what a lovely day."
"It is raining." Severus said.
"That is why it is lovely, each day a live is lovely." Morticia said, "though gloomy weather makes me happy."
"What brings you here?" Morticia said.
"I came to withdraw my insolent daughter!" Lucius said.
"I am afraid you can't, she claimed sanctuary." McGonagall said, "so unlike your father, he was a good man."
"She did, did she."
"Did you not state I was disowned if I did not go to Slytherin?" Iris said walking down the stairs.
"I did."
"Then we have nothing further to discuss, you are no longer family of mine, though you never were, you treated me worse than scum." Iris said, "tried to take my name, you are paid for your care."
"You will pay you insolent child."
"My dear Lucius." Morticia said getting in his personal space, "I may call you that might I? Well, you see I come from the Frump family, you know who they are right?"
"Frump?" Lucius said faintly.
"Yes, and now if anything happens to these dear charming sweet children under my care, well I am within my rights to see those responsible pay." Morticia said running a blood red nail along his jaw, "do say you understand, why children are to be protected."
"I think I will be going now." Lucius said.
Sadly he did not learn his lesson, Ginny Weasley came with Iris to her in tears with a very wicked book. Gomez took it and went to the goblins who were so willing to help. Sadly a student, Justin Finch-Flechtly had been petrified, she sent for mandrakes that came not twenty four hours later from the states. However sadly Draco was down one parent and Lucius found out personally why the Frumps were so feared. His head was sent to his wife as a warning and Draco became a well behaved boy.
She took Iris under her wing and the girl thrived in her care. She did find out that Harry Potter was in fact her brother and because she had asked for sanctuary he was allowed to stay at the castle. That was not a problem during the school year but in the summer, well poor Severus, he finally had to give Iris personal lessons to get her to stop badgering him. He found Iris could brew as good as her real mother could, Harry would chop, mince, dice and prepare ingredients for both when asked but his real loved turned out to becoming a curse breaker. Gomez steered him to the right courses and the like.
Because Gomez was a curse breaker he was able to help Harry out and steered him towards Egypt and Bill Weasley. That and he removed the curse from the defense job, helped find more soul anchors of the evil dark lord and helped get the curse out of Harry. With Frump magic, Morticia easily removed the dark mark from Severus and, on the final banishment of Voldemort, a thousand marked death eaters were dead, their magic drained. Oh well, they deserved it. They should not have tried to warp and twist magic into what it was not suppose to be used for, it was suppose to be a tool for good.
Iris was thriving and was growing into a wonderful young lady. She had the question answered by the goblins on how they knew she was a Fleamont, and it was due to Morticia, she had thought it a wonderful way to help Iris and the goblins agreed, they wanted to see her free. The goblins love the Frump family and it really was Morticia that helped Gomez get his job with the goblins. Morticia was smiling as Thing scurried across the floor, that had been one of her best failures when she was in school, she had been trying to turn a snuffbox to a snail and somehow Thing came about, she refused to turn him back and he became a pet. Gomez entered the room.
"So Wednesday is truly your daughter." Gomez said, "she taught our grandson to set himself on fire!"
"Oh? That is good, what colors?"
"Blue and green." Gomez said, "good thing he was at home and in their basement, Wednesday was thrilled, he will be a fine mage."
"Yes he will." Morticia said standing and concentrating, soon flames surrounded her, she extinguished them just as Snape entered the room. "Severus darling how are you!"
"I wish to poison you and take your job, so the same as always." Severus replied.
"Oh you, you know I am the best at what I do darling, you simply can't leave those children to anyone else, who else would terrify them into making good potions?" Morticia replied, "you look properly spooky now."
It was true, Severus had not liked it at first but Morticia knew what she was doing. She had done a makeover on him, she stated the black made it look like he was trying too hard. So instead he had three main robes, one in dark green, one in midnight blue and one deep rich purple. She had him stop shaving and grown a beard, with his facial structure this would make him look far more sinister and more like dear Salazar, though Severus had a full head of hair. For his hair she had him grow it out and tie it back, it looked better on him. That and the belt with the bags and such on it and the staff he now carried the children were absolutely terrified of him.
Iris was not, but then she liked him and treated him like a long-lost uncle and got Harry to do the same. Harry was starting to turn out like his mother and dressed, if he even knew it more like his grandfather when he was not in school. Jeans, turtlenecks and sport jackets with patches at the sleeves. Iris liked jeans and hoodies but owned a lot of pretty gowns for when she had social events. She had a lot of these and now, at the tender age of eighteen (far too young Morticia thought, she was twenty two when she wed) she was going to get married.
She was marrying into the Canadian Frump family, a one Fredrick "Freddy" Frump. Morticia was pleased and glad that this once scared and hurt girl had learned how to love, live and laugh. It was good that Iris was marrying Freddy, he was such a shy boy and needed to learn to live, being married into such a family as the Fleamont and the youngest son meant his children would take on Iris's name. He did not mind and Iris was happy, so that was a plus and Morticia was pleased.
As for Draco, he did indeed bring the Malfoy family back from scandal and ridicule. He had apologized for how his mother and father treated Iris and had stared a children's home for magical children. He married the younger sister of Daphine Greengrass Astoria and treated her like a queen. He was so good to her that when she nearly died having their son Solos (a name Astoria was particular to), it was Draco's love that pulled her through. They went on to have three more children, Scorpious, Virgo and Iris.
Iris went on to create more self care products under the Sleakeasy brand. She created makeup likes for all skin tones, for both women and men. She created a line of health products and, in time took over the defense job from Morticia. Harry married Luna Lovegood and traveled world as a curse breaker. All in all everyone had a happy, and yes, very creepy and spooky life. One more thing, Iris did meet Alice Cooper and found him an amazing wonderfully dark and creepy man with a heart of gold.