Natsu vs. Gray is a fanon rivalry between Fairy Tail Mages, Natsu Dragneel and Gray Fullbuster.
About Natsu and GrayEdit
Natsu Dragneel (ナツ・ドラグニル Natsu Doraguniru) is a Fire Dragon Slayer, a member of the Fairy Tail Guild and a member of Team Natsu. He is the main male protagonist of Fairy Tail.
Natsu is a lean, muscular young man of average height with a slightly tan skin tone, black eyes, and spiky pink-colored hair. Natsu has a scar on the right side of his neck, hidden by his scarf. His red Guild mark is located just below his right shoulder.
Natsu’s main outfit consists of a sleeveless, gold trimmed, black waistcoat, often left open and untucked, exposing his bare chest, white knee-length trousers, a thick black wristband on his left wrist, black open-toed sandals and the scale-patterned scarf he received from his adoptive father, Igneel. He has also been known to wear a rolled up comforter strapped across his back, though he rarely carries it in battle. In the year X791, Natsu’s attire receives minor changes. He now wears an open-collared, one-sleeved version of his original waistcoat, which is instead tucked in and zipped. The sleeve covers Natsu's left arm, leaving his Fairy Tail mark, as well as his entire right arm, consequently exposed. Natsu continues wearing Igneel's scarf and retains the same lower clothing. He now wears his wristband on his right wrist.
Natsu is carefree and reckless in nature, and, despite his consistent brawls with the other members of Fairy Tail, he is a fiercely loyal and protective friend. Natsu has a straightforward mind, and often tackles issues with a "hands on" approach. Even when disrespected or faced with obvious hostility, Natsu rarely ever reciprocates the feelings, and often forgoes grudge-holding. He did, however, for a short time, hold a grudge against Jellal Fernandes, but eventually forgave him and considered him an ally. He occasionally shows compassion for his enemies, such as when Cobra was betrayed by Brain. Natsu rarely exhibits any perversities towards the opposite sex, there only being two noted instances. The first is seen prior to the Grand Magic Games, when he is seen trying to peek, along with several other of his male Guild mates, on the women as they bathed. The second is when Lucy comes crashing into him while nude, and he stares at her body, even groping her breasts for a moment.
Natsu continuously tries to prove his strength to others. At various points in time, he has challenged Erza, Laxus, Mirajane, and even Gildarts (in short, all of Fairy Tail's current S-Class Mages), to fight him, albeit, he was beaten every single time. Despite his losses, Natsu bears them no ill will, as he considers everyone in the Guild to be his family. Natsu has even gone as far as defending Laxus after his attempt at taking over the Guild. Due to his reckless nature, Natsu's fights usually ends with widespread destruction. Natsu's love of fighting has allowed him to develop a rather strategic mind, helping him to, on various occasions, find weaknesses in his opponent's techniques, or simply weaknesses his opponent's themselves possess. Natsu has also defeated his opponents with pure wit, rather than brute strength. Natsu, befitting his recklessness and love of fighting, never backs out of a fight.
Natsu was very close to Lisanna, and, because of this, after her supposed death, no one in Fairy Tail mentioned her out of respect for his feelings. However, after Lisanna's return to Earth Land from Edolas, this is no longer the case.
As a Dragon Slayer, Natsu suffers from motion sickness. Natsu becomes sick from riding on any form of transportation, even if the transportation happens to be other people, as shown when he was carried by Lucy. This, however, does not apply to Happy, as he considers him family, not transportation. Natsu can become sick from looking at, or simply thinking about, any form of transportation. In spite of his naturally dense nature, Natsu is quite perceptive and understanding of his friend's feelings. After his battle with Gildarts during the S-Class Mage Promotion Trial, Natsu came to understand and accept fear, and has used this acceptance to help his Guildmates and himself emotionally grow. Prior to this event, Erza’s wrath (albeit for comic relief), transportation, and the Magic Council were the only things that Natsu feared.
Gray Fullbuster (グレイ・フルバスター Gurei Furubasutā) is an Ice-make Mage, a member of the Fairy Tail Guild and a member of Team Natsu, and one of the main male protagonists.
Gray's most prominent feature is his spiky black-colored hair. He has dark blue eyes, and his body is toned and muscular.
After the mission on Galuna Island, he gets a scar on his forehead above his left eye that is partially covered by his hair. He also has a cross-shaped scar on his lower abdomen received from using Seven Slice Dance: Blood Version on Tenrou Island. His member stamp is below his collarbone on his right pectoral muscle and is dark blue in color.
Unlike almost all other characters, Gray does not consistently wear the same type of clothes (that is, when he is wearing some), though he is often shown wearing some kind of white coat.
Still, his most consistent piece of clothing is his necklace, which resembles a sword with a stone in it (this is similar to the Rave Stone in Rave Master), and a metal bracelet and similar chain attached to his pants.
Gray has a laid-back personality, but will get serious when the time calls for it. He and Natsu have a friendly rivalry, and while they can often be seen fighting one another verbally or physically, the two are actually quite concerned about each other. Gray was quite obstinate and reckless when he was younger. Over time, he has attained a more cautious attitude towards life, and deals with problems carefully. He is very concerned about his comrades and is truly loyal towards the guild, but tends to trash talk every now and then. Also, he has a disturbing habit of unconsciously removing his clothes at inappropriate moments.
Removing the context of romance, these two consider each other as rivals. They clash and argue most of the time, and find petty excuses just to look for a reason to fight each other. Lucy thinks this is because of their clashing Magic (Natsu uses fire, while Gray uses ice) but most people, including Gray and Natsu, think that the reason for their arguments is that they just cannot stand each other.
They often throw insults at each other, Natsu calling Gray several names (such as Ice Princess, stripper, etc.) while Gray retaliates in the same manner (calling him Flame Brain, retard, etc.). However, during the course of the manga, they begin to form a close (albeit reluctant) camaraderie, since they belong to the same team (forced by Erza). Earlier in the series, they would rarely be seen together, as close contact would only result in one of the Guild brawls. However, as the story goes on, it shows that they begin to relax in each other's company, and begins to get used in each other's presence, although this does not prevent them in starting a fight or two once in a while.
Although there is no apparent rivalry between Natsu and Gray when it comes to romance, there is a fierce debate ongoing about their rivalry fueled by the numerous fans. Generally, this is because of the speculation on who will end up with Lucy Heartfilia, since Natsu, Lucy, and Gray all belong to the same team, leading to the creation of the pairing NaLu and GrayLu.