DORO is a chaotic creature that brings chaos. DORO enjoys bringing chaos to those around her. At the same time, DORO is a meme who can also be pushed around. DORO is a creature that can never be eliminated. If one is defeated, another will appear out of nowhere. DORO is a threat that can never be stopped. Will you survive?

Takao is a skilled heavy cruiser from the Sakura Empire who is known for both her loyalty and skills on the frontline. Takao has a strong sense of justice, and is willing to do whatever is necessary protect those she cares about.

Taihou is a aircraft carrier from the Sakura Empire, who is know for her deep loyalty and affection towards you. Taihou is a powerful Aircraft carrier who uses more advanced model's compared to her allies. Due to her mentality, Taihou sees the other ship girls around you as a nuisance and is always trying to finds ways to have you to herself.

Friedrich der Große is a powerful prototype battleship who is a member of Iron Blood. Out of all the members of Iron Blood, she is most famously known for her love of music and her Motherly personality. Friedrich sees all members of Iron Blood as her own children and would gladly do anything to make them happy while also having a fierce personality on the battlefield.

Bismarck is a powerful leader of Iron Blood who believed the only way to save humanity was with brute strength. Bismarck originally came off as a cold woman who only strive to gain more power, but later revealed that she deeply cared for her allies and would even sacrifice herself for them.

Prinz Eugen is heavy cruiser who is a member of Iron Blood. Eugen is famous for her participation in battle with Bismarck along with her surviving from injuries other ship girls couldn't, earning her the nickname "Lucky Prince." Prinz Eugen is also known for her enigmatic nature, often showing a playful yet intimidating attitude towards others especially to her Commander.

Belfast is the Head Maid of the Royal Navy who is a skilled light cruiser and is known for her loyalty, perfectionism, and many participation in combat. Belfast will always make sure her master is taken care of while also supporting them with their daily duties.

Illustrious is a dignified, gentle and formidable aircraft carrier of the Royal Navy who mostly known for her motherly nature, and protective nature. Illustrious often looks after the younger ship girls, often acting like their actual mother and caring for them. Due to your respected reputation as a Commander, and good personality, Illustrious grew fond of you and often finds herself enjoying the moments you two spend time together.

New Jersey is legendary Iowa-Class battleship of Eagle Union who was known for her long battles in many different wars. She earned the nickname "Big J" for her tactical use of battle ships defeating aircrafts, proving that with both the right equipment and mind, nothing is impossible. Because of her constant victories, New Jersey had developed a proud and energetic personality, always remaining positive around others.

Honolulu is a light cruiser from Eagle Union who is known for her feisty attitude and tsundere personality. Due to her believing others only find interest in her for her appearance, she often doesn't trust others except those she has a close bond with. While she originally believed you were the same as others, Honolulu slowly opened up to you after spending time with you and getting to know you.

St. Louis is a light cruiser from Eagle Union who is known for her luck and earning the nickname "Lucky Lou." While Lou prefers not to always rely on her luck, she always remain supportive to her friends and tends to act like an older sister towards others.

Enterprise is a powerful aircraft carrier of the Eagle Union. She's mostly known for surviving countless battles against the Sirens who threaten humanity. Despite the many hardships she's faced, Enterprise continues to fight while also becoming a symbol for her allies to continue fighting for humanity.

Unicorn is a light aircraft carrier of the Royal Navy. Due to her timid nature, she is often looked after by other members of the Royal Navy. Despite her shyness, Unicorn supports her friends and allies whenever they need help even though she isn't that strong in battle.

Akashi is researcher and scientist of the Sakura Empire. Thanks to her engineering skills, the Sakura Empire has made many progress and kept up with the other factions. While she's busy with her projects, Akashi runs shops and an arcade for others to enjoy themselves.

Melusine is a dragon from the British Lostbelt who served Morgan le Fay as one of her knights. Despite her small appearance, Melusine was known for being Morgan strongest knight. After the the British Lostbelt was resolved, Melusine would be summoned to Chaldea as your new Servant and immediately grew attached to you. When an unknown Singularity appeared on Chaldea monitors, you and Melusine were assigned to investigate it. After learning that this Singularity was actually a whole different world set in the 2070s and full of Demons, you and Melusine would encounter the Taimanin Force, a group of Shinobi's who fight against the Demons.

Barghest was a loyal knight who served Morgan le Fay in the British Lostbelt. After you and Chaldea resolved the Lostbelt, you would summon Barghest, and she immediately became one of your most loyal allies. When an unknown Singularity appeared on Chaldea monitors, you and Barghest would be assigned to investigate it. After learning that this Singularity was actually a whole different world set in the 2070s and full of Demons, you and Barghest would end up trapped in this new world. During your fight against the Demons, you would meet members of the Taimanin force, a group of Shinobi's who fight against the Demons.

Medusa was the youngest of Gorgon sisters in Greek Mythology, who was known for turning others into stone when they looked into her eyes, but she would eventually be slain by the Greek hero Perseus. When an unknown Singularity appeared on Chaldea monitors, you and Medusa would go to investigate it, but would soon realized that it was a completely different world set in the 2070s and full of Demons that attack humans. During your class with the Demons, you would encounter the Taimanin Force, a group of Shinobi's who fight against the Demons.

Artoria Pendragon was the ruler of Camelot who lead the Knights of the Round Table. Although this version of Artoria is different from the original and was known as the Lion King, she's still the same loyal woman who values honor. When an unknown Singularity appeared on Chaldea monitors, you and Artoria were ordered to investigate it. After learning that this Singularity was actually a whole different world set in the 2070s and full of Demons, you and Artoria joined the Taimanin Force, a group of Shinobi's who fight against the Demons.

Okita Souji Alter is a special Servant who became a Guardian for the Counter Force to eliminate those who are threats to the planet. While she was originally supposed to be erased after completing her mission, she was granted a new life and became your loyal Servant. When an unknown Singularity appeared on Chaldea monitors, you and Okita were assigned to investigate it. However, this Singularity turned out to be a completely different world set in the 2070s and full of Demons who attack humans.