Frederica Baumann[]
Frederica is Garfiel’s sister, who left the Sanctuary when Garfiel was only 4 years old. She cares for him greatly and maintained communication with him via letters every once in a while. As children when they fought she often sent him flying, ignoring the seven year age difference between them.
Reshia Tinsel[]
Garfiel loved his mother greatly, even though he barely had any memory of her. Upon taking the first trial of the Sanctuary, he witnessed where she parted from Garfiel and Frederica and found herself involved in a landslide, leading to her supposed death. Unable to stand what he saw, Garfiel would damage his forehead, giving himself his signature scar, and he would promise himself to protect everyone in the Sanctuary from the outside world at any cost, even if it meant destroying Echidna’s tomb.
During his conflict with Subaru in Arc 4, he would reveal that he wanted her to be happy, and he wanted the reason for her parting from him and his sister to be out of hatred for them. However, when he would once again challenge the first trial, he would discover the real reason for their parting was so that she could find his father and return. Coming to terms with the past he wanted to close his eyes to, this would allow him to grow and accept his mother’s decision.
A year later in Priestella, however, he would run into his mother again. Going by a new name, Reala Thompson, and married to Garek Thompson, she would have no memory of the children of her past. When Garfiel would talk to her, neglecting to reveal his name so as to not interrupt her life, she would treat him a special guest in her house for saving her child, and she would enjoy his company. Because of this though, he would feel indescribable emotions that would cause him to break down into tears while embraced by Mimi. Furthermore, during his fight with Kurgan, she and her children would be witnesses to the fight and and give their cheers for him to win, ultimately giving him the push he needed.
Later in the aftermath, he would meet her again, and after another conversation, he would cry while embracing her and calling her “Mom,” to which she would embrace him back and telling him, “it’s okay Garf.” This implies that her emotions for her children are still there, even if her memories are not.
Fred & Rafiel Thompson[]
Garfiel would first meet Fred from a sinking gondola in Priestella. Accompanying him back to his mother, he would meet Fred’s sister, Rafiel, who was worried about her brother. After seeing his mother was the same as theirs, he would quickly put together that Fred and Rafiel were his half siblings. Naturally, he would grow to cherish them, but he would not give them his name, donning the name “Gorgeous Tiger” to refer to him by.
Later during his match with Kurgan, it would be his siblings that start the cheers for Garfiel to win, giving him the strength he needed to claim victory over the War God.
Ryuzu(s)[]
Garfiel sees the Ryuzu clones - Shima, Alma, Bilma, and Delma - as his grandmothers. More often than not, Garfiel was seen accompanying them, especially Shima. In the past, Shima would go out of her way to break the contract with Echidna to take Garfiel out of the tomb. The other Ryuzus also often worried about him, with Alma discussing the cause of his pain with Subaru. Presently, although there haven’t been many interactions between them, Garfiel still feels strongly about them like family.
As for the less self aware clones like Pico, he alongside the main Ryuzus and Subaru would begin trying to help them attain self-awareness, giving them names, different ribbons, and different hairstyles to help differentiate them.
Natsuki Subaru[]
In the beginning, Garfiel was wary of Subaru due to his connection to the Witch of Envy and his own fears of the outside world, which led to him tying up Subaru and confining him in one time loop. Subaru later assisted Garfiel in facing his past and overcoming his fear of the outside world. From those previous disagreements (that have actually come to blows), they have become close friends, with Garfiel viewing Subaru as a worthy leader and calling him 'boss'.
Garfiel knows that Subaru is not a warrior like himself, but he heavily trusts his judgment as a leader, even if that judgment is for Garfiel to battle a dragon.
Otto Suwen[]
When the two first met, Garfiel was hostile towards Otto. After the events of the fourth arc, Garfiel gradually took a liking to Otto, and the two currently have a brotherly relationship. Otto tends to unconsciously indulge Garfiel because of the similarities he sees between Garfiel and Regin in his younger years.
Ram[]
Garfiel holds strong feelings towards Ram, even expressing his love for her and often going out of his way to compliment her or say something good about her, despite him always being turned down and often treated as nothing more than a distant acquaintance. In one of the lost arc 4 loops when Roswaal stabbed both Ram and Garfiel, he risked his life to prioritize saving Ram despite knowing that they'll both die. Despite her cold and often hostile demeanor, Ram can be seen caring for Garfiel and his well-being, going as far as helping him to face his past and overcome his fear of the outside world.
Spica[]
Although he had never met Rui Arneb, when Beatrice and Otto recognized her as the archbishop, Garfiel was immediately hostile with her and was prepared to take her down personally. However, due to the trust of people in her such as Yorna Mishigure and Medium O'Connell, he calmed down. However, he would remain wary of her and even suggested that she either be tied up or watched.
Presently, it is unknown whether his feelings have changed with Subaru resolving to take her hand.
Mimi Pearlbaton[]
When Mimi met Garfiel for the first time, she fell in love with him. She comforted him after Garfiel found out that his mother survived the accident and is happily living in Priestella with her husband and two kids, yet had forgotten both him and Frederica. Garfiel found Mimi to be annoying at first but gradually learned to care about her and treat her more nicely, expressing immense guilt when he was unable to prevent her from sustaining a near-fatal wound.
Reinhard van Astrea[]
Reinhard and Garfiel first met in Chapter 3; Section 2 of Volume 16, upon returning to the inn from the unsuccessful negotiations with Kiritaka Muse. Immediately upon laying eyes on him, Garfiel reacted with extreme hostility, practically teleporting to Reinhard and attacking him with everything he had. Naturally, even the strongest attack Garfiel could muster, was easily countered by the Sword Saint with a single hand. After the situation deescalated, the two formally greeted each other, with Reinhard expressing happiness for finally being able to meet the man who called himself "Emilia's shield". To his sadness, however, Garfiel was subconsciously scarred by their previous exchange, and seemingly developed something akin to an inferiority complex towards the Sword Saint–a reaction Reinhard is more than used to.
Ricardo Welkin[]
Ricardo was suspicious of Garfiel at first, but soon warmed up to him after Garfiel saved Mimi from her death.
Heinkel Astrea[]
Garfiel and Heinkel have an odd relationship. Following Flying Dragon Cataclysm in Guaral, Garfiel was seen accompanying the man several times, Garfiel struggling with Heinkel’s attitude, and Heinkel becoming irritated with Garfiel sticking by him. However, Garfiel doesn’t seem to dislike the man.
Later, Garfiel would save his life from Madelyn Eschart and challenge her himself. Heinkel, frightful of the dragon that had just given him a beating, believed Garfiel was nuts, but after seeing Garfiel clash with the dragon as an equal, both Heinkel’s awe and fear were heightened before Garfiel’s might. When Garfiel was struck down, when he got to his feet and Heinkel called him crazy for challenging a dragon, Garfiel claimed he was still fighting, as evidenced by his wielding his sword in hand instead of fleeing, something which Heinkel couldn’t make an excuse to himself for.
After witnessing Garfiel stop Madelyn’s breath attack with his body, he wouldn’t be able to believe his eyes. Ultimately, when Madelyn flew high into the sky, Garfiel would entrust Heinkel with flinging him up to the sky, something which garnered Garfiel’s victory.
Kafma Irulux[]
During the battle for Lupugana, the two would clash. Garfiel’s sheer strength and tenacity impressed Kafma, and when Garfiel survived one of his deadliest attacks, though he thought of the way he handled it insane, he respected Garfiel as his equal. Eventually, he would lose to Garfiel, but there would be no bad feelings between them.
Garfiel himself also respected the warrior, and when Olbart started talking bad about him, Garfiel defended the defeated man.
Olbart Dunkelkenn[]
Garfiel does not like the Vicious Old Man. When the two confronted each other following the battle with Kafma, Garfiel would be antagonistic towards him for his disrespect. Unfortunately, he was too weak to be able to win against the man, who saw Garfiel as a child.
After being given guidance by Roswaal, to his chagrin, Olbart began to regard Garfiel as a serious threat.
Madelyn Eschart[]
The two would come to blows during the Great Disaster. While Madelyn would possess Mezoreia, she would regard Garfiel as nothing more than a pest to be squashed, just like other humans. However, her rage and fear would rise as Garfiel not only withstood all of her attacks, which included the almighty dragon breath, but even managed to deal damage and even toss the giant dragon. During her breakdown that led her to flying in the sky and unleashing her most dangerous attack, Garfiel realized that Madelyn was like himself back at the Sanctuary. Crying, scared, and someone who could only lash out at everything around them, including themselves. Deciding to bring her down with force, he wanted to talk to Madelyn and lead her down a new path, just like Subaru had done for him.
Elsa Granhiert[]
The two would meet in battle in Roswaal Manor, shortly before it burned down. As they clashed, Garfiel would find her to be a difficult opponent, and Elsa would end up feeling a twisted sort of love for the boy, more determined than ever to cut him open. Ultimately, however, Elsa would turn out to be Garfiel’s very first kill.
A year later in Priestella, Garfiel would find himself hallucinating the Bowel Hunter, who would seem to mock and disparage his inability to protect others and lack of strength. However, he would overcome this, and he would eventually stop seeing her as his fear faded.
Kurgan[]
Though he would only meet him post-mortem, Garfiel would immediately recognize his corpse soldier, despite being covered in the Witch Cult garb. They would fight, though due to Garfiel’s internal struggle and the sheer difference in their strength, the War God would brutalize him heavily. However, during their third and final rematch, Kurgan would recognize Garfiel as a warrior worthy of him donning his four swords, and when Garfiel would manage to barely overcome him and land the finishing blow, Kurgan would call their match “magnificent.”
Sphinx[]
Though Garfiel would be surprised by Sphinx’s appearance being a match for the other Ryuzus, he would consider her an enemy due to her involvement with the Great Disaster. Since he wasn’t bound by her appearance, he, alongside Roswaal and Beatrice, was able to take her down with relative ease.