The idea of being transported to an entirely new world is frightening. Entirely new laws, races, and customs need to be learned, and there’s usually a demon lord that needs to be killed too. This genre of anime is called isekai.

Isekai protagonists often find the idea of living in a fantasy land an ideal form of escapism from the underwhelming life they lived on Earth. That said, they need to get their bearings and the best way to do so is to find a capable ally. Fortunately, isekai worlds are filled to the brim with fantastically strong and wonderfully personable characters.

10 Raphtalia Always Has Naofumi’s Back (The Rising Of The Shield Hero)

The 10 Best Side Characters In Isekai Anime, Ranked_0

In The Rising Of The Shield Hero, seemingly everything was going wrong for Naofumi Iwatani after he was transported into a fantasy world. He was ridiculed for becoming the shield hero, framed for sexual harassment, and ended up hitting rock bottom.

At Naofumi's darkest moment, he enlisted a demi-human slave called Raphtalia, and she changed everything for the better. Her unwavering loyalty and positivity were a beacon of light for Naofumi, and she proved herself to be a worthy battle companion as time went on.

9 Albedo Should Be Feared By Everyone In The Tomb Of Nazarick (Overlord)

The 10 Best Side Characters In Isekai Anime, Ranked_1

In Overlord, the MMORPG YGGDRASIL was about to be shut down. With that in mind, Momonga decided to take one last look around the Great Tomb of Nazarick and jokingly change the personality of his NPC minion, Albedo, to fall in love with him.

When Momonga gets trapped in that world soon after, his joke had real consequences. Yet, more than just being a love interest, Albedo proves herself to be a worthy second-in-command for Ainz Ooal Gown. She has enough power to obliterate their foes and the leadership skills to help manage their operations.

8 Akatsuki Is An Invaluable Ally To The Adventurers (Log Horizon)

The 10 Best Side Characters In Isekai Anime, Ranked_2

Some characters are loyal because of a strong connection or romantic feelings. For the VRMMO player Akatsuki from Log Horizon, it was both. Her bond to the ever-scheming Shiroe defines much of her behavior, ensuring that he always has someone to rely upon when push comes to shove.

The young ninja is willing to do whatever it takes to help Shiroe on his quests, and on multiple occasions, Akatsuki proves that her own skills in stealth and combat are strong enough to protect the adventurers she cares about. Protecting the Adventurer City of Akiba would be far harder without Akatsuki present.

7 Ristarte Has A Deeper Connection To The Cautious Hero Than She Knows (Cautious Hero: The Hero Is Overpowered But Overly Cautious)

The 10 Best Side Characters In Isekai Anime, Ranked_3

In Cautious Hero: The Hero Is Overpowered But Overly Cautious, the goddess Ristarte had a simple job — summon a hero from another world to help save a planet in danger. So, she summons Seiya Ryuuguuin and acts as his loyal companion to do so.

Ristarte listens to his needs (mostly), and worries for his safety during his numerous cautious schemes. However, her hidden connection to Seiya goes much deeper than her surface-level attraction, and it’s this underlying connection that makes the two inseparable.

6 Clara Valac Is A Ball Of Positive Energy To Everyone Around Her (Welcome To Demon School! Iruma-Kun)

The 10 Best Side Characters In Isekai Anime, Ranked_4

Every story needs a bit of light-hearted levity. When Iruma Suzuki enters Babyls Demon School in Welcome To Demon School! Iruma-Kun, he's surrounded by colorful and whacky personalities, and none stand out more than Clara Valac.

Clara's random behavior is completely unpredictable, yet she always manages to put a smile on people's faces. Her bond with Iruma is rock-solid, while her musical performances and off-the-wall attacks are a highlight for fans of the anime.

5 Ruijerd Superdia Is Redeeming The Name Of His People (Mushoku Tensei: Jobless Reincarnation)

The 10 Best Side Characters In Isekai Anime, Ranked_5

When being reborn into a fantasy world, there are entirely new rules and customs to be learned. One of these is the notion that people from the Superd tribe are evil and dangerous, but Rudeus Greyrat from Mushoku Tensei: Jobless Reincarnation didn't judge a book by its cover.

When Rudeus is saved by Ruijerd Superdia, he sees a man looking to redeem the image of his people, and they begin to work towards that worthy goal. Ruijerd is a noble warrior with a clear moral compass about protecting the innocent, and he has the skills to back it up.

4 Megumin Is The Strongest Glass Cannon That Satou Kazuma Could Ask For (KonoSuba)

The 10 Best Side Characters In Isekai Anime, Ranked_6

Allocating skill points to a variety of attributes allows most mages to be versatile in any situation. But, Megumin from KonoSuba isn't like most mages. Her endless fascination with explosion magic influenced her to put all her points into that one path, making her the strongest user of explosion magic in KonoSuba.

The one and only fatal downside to that is that Megumin can only use one explosion attack per day before becoming incapacitated from fatigue. She’s the ultimate glass cannon, but one that Satou Kazuma is glad to have on his side.

3 Benimaru Can Take Care Of Problems For Rimuru Tempest (That Time I Got Reincarnated As A Slime)

The 10 Best Side Characters In Isekai Anime, Ranked_7

In That Time I Got Reincarnated As A Slime, many of the monsters and races that Rimuru Tempest saves feel a sense of gratitude towards him, and end up serving him as a result. Perhaps none of those groups have been as important to Rimuru as the oni. After granting them names, they transformed and their power grew exponentially.

The oni became Rimuru’s most trusted advisors and allies. Among them, Benimaru has proved himself to be an indispensable ally to Rimuru, with enough strength to destroy a faux Charybdis, an enemy that even Rimuru struggled to fight in Season 1.

2 Rem Is A Dangerous Combatant & A Loyal Companion (Re: Zero)

The 10 Best Side Characters In Isekai Anime, Ranked_8

It's hard to discuss loyalty, love, and strength without bringing up Rem from Re: Zero. The oni is fierce and protects those she cares about, and it often makes it dangerous to be around her without earning her trust first.

Rem's devasting agility and the skill with which she viciously swings around her Morningstar make her a deadly enemy to have. Yet, in Rem's tender moments, she’s just a girl who needs support, and who can support those she cares about in equal measure.

1 Asuna Yuuki Is A Formidable Player In Any Virtual Reality Game She Enters (Sword Art Online)

The 10 Best Side Characters In Isekai Anime, Ranked_9

Surviving the death game known as Sword Art Online would have been impossible for Kazuto Kirigaya if he had never met Asuna Yuuki. On top of being his soulmate and moral support throughout Sword Art Online, she's also a fierce leader who has led her people to victory in numerous battles.

As one of the most remarkable swordswomen in virtual reality gaming, Asuna has made a name for herself as a famous warrior and capable leader. That’s exemplified when she finally appears in the Underworld in the form of the Goddess of Creation, Stacia.