The detail of Rock D Marco parent :-
1) ROCK D XEBEC
Forty years ago, Rocks appeared as a
Rocks D. Xebec, commonly known simply as Rocks, was the captain of the Rocks Pirates. He was prominent 40 years ago, before the Pirate King Gol D. Roger came into power.
Forty years ago, Rocks appeared as a tall man, but more normally proportioned than some of his huge (albeit not giant-sized) crew mates. His long, darkish hair was an unruly mass, with locks sticking out unevenly behind his head, in every direction. He had slanted eyes and seemingly tended to sport a wide, toothy smile. For clothes, Rocks appeared to don a high-collared sailor's coat with fringed epaulettes, plus a buttoned shoulder belt.
Based on stories of his exploits, Rocks appeared to be an incredibly vicious and ambitious man, having no care as to who he attacked as long as he could garner power for himself and leading his crew to destroy whomever interfered with his ambitions. He was also quite fearless and indiscriminately ruthless, as he had no issue with killing World Nobles or their slaves if it suited his wishes. Rocks' dream was to become the King of the World and he attacked many locations and left mass destruction in his wake to assert his dominance. He was also very curious about subjects that the World Government had kept hidden, resulting in him dabbling in those subjects. Rocks' former subordinate, Charlotte Linlin, considered him to be untrustworthy and a "good-for-nothing", someone underserving of her respect.
Although Rocks' individual strength and abilities are unknown, he was well-reputed for presiding over a crew of extremely powerful pirates with clashing personalities and a lack of camaraderie, indicating that he was an extremely powerful and charismatic individual and possibly the strongest person of his time. Many of these people would go on to make big names for themselves; Edward Newgate, Charlotte Linlin, and Kaidou even became Emperors of the New World.
Xebec was considered to be the most formidable rival of the Pirate King, Gol D. Roger, even more so than his then-subordinate Whitebeard would come to be. He was so fearsome, it took both Roger and Monkey D. Garp working together to finally defeat him. Rocks' defeat was also what caused Garp to become a legend and to be known as the "Hero of the Marines", showing how much of a threat the World Government considered Rocks to be. Kaidou, who at some point came to be called the world's "Strongest Creature", seems to put Xebec in the same elite class with a very small number of other notable figures that actually possess the strength to stand against him in battle, such as Kozuki Oden, Shanks, Whitebeard, and Roger, further hinting at Xebec's might.
Aside from raw strength, Rocks seemed to be a very intelligent and knowledgeable man, as he was, in studying many subjects that were considered taboo, able to unravel many of the World Government's secrets, which led the Government to decide to erase his name from history.
Many of Rocks' subordinates would go on to become extremely notable pirates, particularly Edward Newgate, Charlotte Linlin, and Kaidou, who became three of the Four Emperors ruling over the New World. Shiki became an infamous pirate that clashed with the Roger Pirates multiple times and became the first inmate to escape Impel Down and Captain John gathered a fabled treasure.
Rocks' place in history has been considerably diminished in the decades since his death, with many younger Marines being unaware of who he is. According to Sengoku, this lack of knowledge about him is mainly due to the World Government's intervention, as his path resulted in him dabbling in subjects they forbid. Additionally, due to the overall lack of camaraderie within the Rocks Pirates, most of Rocks' past subordinates are not inclined to talk about their time sailing with the crew.
Rocks' dream of taking over the world would be revived 38 years after his death, as his former subordinates Kaidou and Linlin decided to put aside their enmity with each other and form a temporary alliance to conquer the world.
2) CHARLOTTE LINLIN AKA BIG MUM.
Charlotte Linlin better known as Big Mom is the captain of the Big Mom Pirates and was formerly one of the Four Emperors ruling over the New World, as the only female member of that group. She is also the matriarch of the very large Charlotte Family, whose many children make up the infrastructure of her crew. She is also the creator of the unique race of creatures known as Homies, who mainly inhabit all of Totto Land, and happily serve her. Big Mom possesses three special homies, Napoleon, Prometheus, and Zeus, but unhappy with Zeus' continued failures, Big Mom decided to disown and replace him with a new Homie named Hera.
Big Mom rules over Totto Land as its queen,[5] seeking to form it into a utopia where all the world's races can live together in peace without discrimination or segregation. In her childhood, Linlin was raised in the Sheep's House under Carmel, whose Devil Fruit power she eventually inherited, before co-founding her own pirate crew with Streusen following Carmel's death.
Big Mom was also part of the legendary Rocks Pirates as one of its core members. After clashing against fellow Emperor Kaidou (another ex-member of Rocks' crew), she formed a Alliance with Kaidou and the Beasts Pirates with the intention of conquering the world. However, this never came to fruition as their alliance would go on to be defeated by the Ninja-Pirate-Mink-Samurai Alliance.
Big Mom was the last of the Four Emperors to be named; her epithet was first revealed after the Summit War of Marineford by Eustass Kid and her real name was revealed by Pappag on Fish-Man Island. She is the primary antagonist of the Whole Cake Island Arc, the secondary antagonist of the second half of the Wano Country Arc, and one of the central antagonists of the Four Emperors Saga. Following her loss in Wano Country to Eustass Kid and Trafalgar Law, Big Mom was stripped of her position as one of the Four Emperors.
Big Mom is a round, obese old woman with a chin often hidden by her torso. She has an enormous physique, standing at 880 centimeters or just shy of 29 feet tall, which is the largest known height for any human. She is taller than the extremely large Whitebeard, and was able to hold the 277 cm tall Brook in her hand. Even as a five-year old child, Linlin was already massive to the point she was mistaken for a giant, and was as tall as giant children. However, as an adult, she is a little over three meters short of the minimum giant height of 12 meters. She has moderately round, orange eyes, prominent eyelashes, and wears thick purple eyeshadow. She has a very wide mouth with full lips sporting red lipstick, large, round teeth, and a long, thick tongue that often sticks out. She also has long, curly, and wild pink hair that falls halfway down her back as well as a long beak-like nose, and plump, round cheeks.She also sports a tattoo on her left shoulder and arm, consisting of a large, standard-shaped red heart framed by thin lines curled at their bottom ends, which all tops a far smaller heart.
When she was five years old, Linlin towered over normal humans and was about the same size as a giant child. She had a much rounder face and had freckles on her cheeks, her hair was kept into two buns on both sides of her head. Her nose was more triangular compared to present-day where it now protrudes outward in a rounded, beak-like shape. She wore a polka-dotted dress very similar to the one she currently wears, but with this one reaching her neck and having a bow at the top. At the start of her pirating career, Linlin's hair grew longer and she donned a dark sunhat.
At 28 years old, Linlin looked drastically different compared to both her early childhood days and her later years. She was remarkably slimmer and had a visible neck, chin, and jawline, and her features were significantly smaller and more proportionate to her face. Her hair was long, yet considerably less wild than in the present day, and she had a large strand of hair falling to the left side of her face. In Oda's depiction of her at this time, she wore a dark fedora with a polka dot pattern, a bandana, and a dark, polka dotted top with a captain's coat draped over her shoulders. She had a similar appearance (although shadowed) during her time in the Rocks Pirates.
At 48 years old, her neck was considerably larger and more muscular than it was at 28 and she had a much larger, more pronounced jaw. By this time, she had already begun wearing Napoleon and her polka-dotted bandana. Five years ago, at age 63, her physique has become very much similar to currently at age 68, and she wore a purple and pink vertical stripped dress. During her first appearance, Big Mom was shown to often drool large quantities of saliva when talking. When in her regular fits of rage from not having a certain food at her direct disposal or simply when extremely furious her pupils take on a spiral appearance.Big Mom wears a large pink bicorne hat bearing a Jolly Roger on the front. She has worn two versions: the first design consisted of a standard skull with crossbones behind it, as well as large flame-like patterns to the sides, whereas the current version, named Napoleon, has two crossed sabers instead of crossbones, possesses smaller lateral flame patterns, and is imbued with a fragment of her soul, causing its skull to change expressions and talk to Big Mom on its top, the hat is edged with a thick yellow streak, it has a strip snap-fastened to it, and beneath it is a light, polka-dotted bandana fastened around Big Mom's head. Big Mom also dons a pink dress with red polka dots and white ruffles on its neckline and hemline,with a wide, rippling white cape attached to its back that falls to the ground.The outfit is completed with dark blue high heels, one turquoise pearl wristband on either wrist, and golden, jeweled rings on all her fingers.
Hours after her craving fit for wedding cake started, Big Mom was noted to have gotten slimmer and slimmer up to the point where she has become emaciated. She went back to her usual appearance after eating Sanji's wedding cake. As O-Lin during the Wano Country Arc, she wears her hair in a shimada. During the Fire Festival, she changed into a black furisode kimono with a white minimalist floral pattern, over a light pink robe, tied with a yellow polka-dotted red sash tied in a bow. She also wears a more elaborate shimada.
Marco was born during Big Mum escape from Death Valley, although she has short romance with Rock D Xebec, he was great in bed. Big Mum has 100 times Cummings. It was 100 times pleasure that she ever had in her life. Her Giant gene keep her going. Otherwise she was faint without a doubt. Rock D Xebec has ton of stamina so it was expected.