Happy/Relationships

Natsu Dragneel
Natsu is Happy's closest friend; Natsu is the one who found Happy's egg, and raised it with the help of Lisanna, and is also the one who gave him his name. Since Happy's birth, the two have been inseparable. Over the years, Happy has proved his loyalty to Natsu, oftentimes agreeing with his thoughts and ideas. Happy is also willing to risk his life to help Natsu, and the reciprocal can also be held true. Happy also deeply cares for Natsu, as seen when he is brought to tears when he is forced to follow his orders and leave him to fight Lyon alone.

In Edolas, Happy is horrified when he learns the truth behind his "mission", which was to kill Natsu, and is overcome by guilt. However, Natsu, despite knowing about the "mission", still thinks of Happy as his friend, trusting him and calling him his partner. This trust continues even after returning to Earth Land, as Natsu picks Happy to be his partner for the S-Class Mage Promotion Trial, despite Happy not being able to help him in a fight. Happy accepts the offer and promises to make him an S-Class Mage.

Lucy Heartfilia
Lucy and Happy are fellow guildmates and members of Team Natsu. Happy plays pranks or teases Lucy most of the time, often calling her "heavy", much to Lucy's annoyance. He also teases her whenever she is with Loke or having a moment with Natsu by rolling his tongue while saying "he likes you". Happy, like the rest of his team, also has a habit of going to Lucy's apartment without her consent, a habit that Lucy has learned to get along with. Despite all this, Happy and Lucy are really close friends and care for each other deeply as seen when Happy cries when he thinks that Lucy will abandon the guild. The two can also be seen together during most of their missions, with Happy giving Lucy support and advice.

Erza Scarlet
Just like most of Fairy Tail, Happy respects and acknowledges Erza, and believes that her Magic is extremely powerful, even to the point of betting money on her to win a match against his partner, Natsu. However, because of Erza's temper, he fears her, as shown when Erza arrives at Galuna Island to bring back the members of Team Natsu after they knowingly venture out on an S-Class job that they weren't allowed to take; Happy instantly tries to flee when he sees Erza, but his efforts are in vain, as Erza easily captures him and ties him up alongside Lucy, forcing them to help her find Natsu. Despite this, Happy treasures his relationship with Erza—demonstrated when he fights alongside the members of his team and Juvia Lockser when she is kidnapped and brought to the Tower of Heaven.

Gray Fullbuster
As members of the same team, Gray and Happy are good friends despite Happy being the partner of Natsu: Gray's biggest rival. Happy doesn't take part in Natsu's rivalry against Gray though, oftentimes acting as a mediator between the two. He usually ignores it in order to achieve an objective, as he believes that both are very strong Mages, but he sometimes uses their rivalry to "power up" the two, though mostly Natsu, who gets very angry when he sees that there's something that Gray can do that he can't.

Carla
Carla is Happy's love interest; Happy first meets Carla at Master Bob's Palace during the initial meeting of the alliance created to defeat the Oración Seis and immediately falls in love with the female cat. He attempts to impress her by offering her a rather large-sized fish, but his efforts are proven to be little more than in vain, and this attitude continues, and actually worsens, after Carla joins Fairy Tail. Carla's hostility is later revealed to have stemmed from Happy's lack of awareness of their home world—Edolas.

The two later go to Edolas with Natsu and Wendy in order to save their guildmates and the townspeople of Magnolia, and are subsequently returned to Extalia, their homeland, where they are informed of the exact detail of their mission. Though horrified, Happy stands up for Carla, telling their kinsmen, the Exceeds, that they are not their puppets and that they are Mages of Fairy Tail. Hearing Happy's words gives Carla hope and prompts her to call Happy by his name for the first time.

The two later return to Earth Land with their friends, where Carla begins to act friendly towards the blue Exceed, encouraging him to not give up before trying as Natsu and Gajeel force him to fight Pantherlily; Carla later even accepts his invitation to dance with him. Happy considers Carla to be one of his friends and cares for her rather deeply, as seen when he begins to cry upon discovering her injured prior to the start of the Grand Magic Games.

Pantherlily
First meeting when Pantherlily was a member of the Edolas Royal Army, Happy expressed his surprise upon seeing the overly large Exceed. After the activation of the Reverse Anima (which sent all the Magic in Edolas back to Earth Land) Pantherlily is sent there as well and subsequently joins Fairy Tail, befriending Happy and Carla. However, their friendship doesn't stop Happy from getting angry at Pantherlily when it concerns Carla, as seen when Pantherlily accidentally bumps Carla's bum.

Lisanna Strauss
When Natsu discovered Happy's egg, Lisanna volunteered to help him raise it, showing Natsu the proper way to hatch the egg. She cared rather much for the egg, as seen when she was crying when she thought that someone took it, and helped name the small Exceed, as she remarked that he was the "bluebird of happiness", prompting Natsu to call him "Happy". Happy, in turn, thinks of Lisanna as a mother figure and was deeply affected by her "death", later crying tears of joy when he finds her alive in Edolas. Lisanna, meanwhile, deeply missed him when she was sent to Edolas and tightly embraces him upon her return to Earth Land.

Mirajane Strauss
Mirajane is kind towards everyone in the guild; Happy is no exception. When she was younger, Mirajane was known far and wide as "The Demon", oftentimes glaring and smirking. Happy's birth was one of the few moments that made her crack a genuine smile, and even made her forget about fighting with Erza; after Lisanna's "death", Mirajane's personality almost quite literally reversed. Being an S-Class Mage, and a Master of Take Over and Transformation, Mirajane taught Happy, alongside Natsu and Lucy, the basics of Transformation at one point, though Happy didn't do well as he could only transform to a deformed form of Lucy. Happy likes Mirajane for her kindness and her voice, and as such she sings him songs about fish during their spare time.

Lector & Frosch
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Due to Happy's childish and nonsensical nature, he is quite easily subject to the dark wit of Lector and Frosch, Sabertooth's resident Exceeds. Having not met these Exceeds in Edolas, Happy is surprised when he first sees them, prompting Lector to direct a derogatory remark towards him, which is subsequently followed by Frosch's bland agreement. During the discussion that their owners are having, Lector keeps insulting Happy and shows off his knowledge about Dragon Slayers, again being followed up by Frosch's agreements and praises. Faced with so much humiliation and being unable to fight back, Happy swears revenge to the Exceed duo, starting an intense rivalry with them that could be compared to the one between Natsu, Sting and Rogue: their owners.

During the war between Fairy Tail and Tartarus, it appears as though their rivalry has abated, as Lector is seen cheerfully greeting Happy, and Frosch naturally agreeing with his friend. Lector even further complimented on how the mushroom on Happy's head looks fashionable.

Plue
Plue and Happy have a friendly relationship and are usually seen together whenever Lucy summons the Celestial Spirit; the two meet when Lucy first summons Plue in order to demonstrate to Natsu and Happy how a Celestial Spirit Mage makes a contract with a Celestial Spirit. Happy initially found it strange that Plue didn't bark despite being called the "Canis Minor". However, in spite of Plue technically being a dog, the two quickly become good friends.

Happy and Plue once played a prank on Lucy, making her think that the Celestial Spirit could talk, showing the sharing of a playful side. They are also seen at times dancing together, reinforcing their shared lighthearted nature.

Loke
Loke is a Celestial Spirit known as "Leo the Lion", and Happy associates "lions" with "big cats", which Loke confirms them as being, which delights Happy. Happy is also a big supporter of the "romance" between Lucy and Loke, saying his signature "You liiike him" when they're together.

Millianna
Being a cat, Happy easily becomes subject to Millianna's possessive, cat-loving personality.

During the Tower of Heaven incident, Happy was kidnapped by Wally Buchanan during his fight against Natsu Dragneel, who he believed had been killed. Thinking of Millianna's love of felines, Wally brought Happy to her after the fight, making the young girl extremely happy; Happy was then brought to the Tower of Heaven and stayed in Millianna's cat-themed bedroom. Millianna quickly become even more entranced in Happy after she learned that he could speak.

When Natsu returns to get revenge on Wally, Happy helps him and regardless of his status as a technical enemy, Millianna keeps protecting Happy, as her love for cats exceeds her desire to complete her mission.

Lucky
Lucky is Happy's estranged father, and the two held a brief but friendly relationship.

After being greeted rather violently by Lucky, Happy remains unaware throughout their entire time together that the Exceed is his father.

However, Lucky shows some degree of compassion when he invites Happy and Carla into his house to escape the Exceed Army, though he continues to shout at them. Lucky bosses Happy about considerably, even when taking care of him, making Happy somewhat irritated towards him. Despite this aggression, Happy is seen heeding Lucky’s words and seems empowered and motivated by them. It is clear that the two have similar traits, as Marl points out the similarities in their flight pattern.

Lucky's clear love for Happy is demonstrated when Happy leaves to save the others; at this point, Lucky and his wife stand in tears, watching their son fly away. It is also implied by Marl that Lucky shares his strong parental ideals and feelings with his son.

Marl
Marl is Happy's estranged mother and she holds strong maternal feelings for him, despite the shortness of their time together.

Happy did, and still does, not know that Marl is his mother and refers to her as "ma'am" throughout their time together. Marl does know this fact, however, and is very caring, kind and warm towards Happy and Carla when they are in her home; she even calls Happy a "knight" in an affectionate way. Marl's maternal feelings are further expanded when she recalls the events of six years previous, and when she speaks about the importance of parenthood, showing her strong feelings regarding her child. She later stands alongside her husband when Happy flies to the Royal City and cries at his departure.