Disclaimer: Avatar: Macai's Journey is a fanon spinoff of the Avatar: The Last Airbender animated series. It has already been completed on Webnovel, Avatar Wiki, and Wattpad before being launched on Tapas.
While not the main characters of Avatar: Macai's Journey, these women all hold weight in the story.
Yosari:
Macai's loving and warm mother.

Princess Azula:
Azula is an original character from Avatar: The Last Airbender and is Macai's love interest. The picture below shows her on the right with Macai. She is feisty, fearless, daring, insecure, manipulative, and harbors some caring elements that are undermined by her aforementioned insecurities. Despite her flaws, Azula is a strategic genius and is famous for her use of blue fire.

Kanna Foloki:
While coincidentally sharing the same name as the waterbender Katara's grandmother, Kanna Foloki is a much younger and different character. Kanna is one of Macai's closest companions. She is known for her loyalty, cheerful personality, surprising intellect, and high tier striking skills. In some ways, she is like a firebending version of Ty Lee. However, Kanna is probably even nicer personality wise and is known for being compassionate.
Like Katara, Kanna hesitates to hurt her opponents in battle when she is first deployed into battle. Kanna has a somewhat different fighting style since she is relatively tall for a female and uses her teach to land counter punches or kicks as well as counter fire attacks. Kanna often moves laterally as she looks to land devastating blows on her enemies.

Samira:
Despite not having the ability to "bend" Samira is known for her immense drive, charisma, courage, dedication, and heart. Samira is in impeccable physical condition and combines her fitness with her skill whenever she duels. At times, Samira motivates important characters like Macai, Rosh, and Kanna in her storyline.


Sonna:
I could keep going but I'll stop here. Sonna is another one of the big five female characters in AMJ because she is an exceptional archer. Sonna is known for her compassion, being a great caregiver within her unit, being an awesome team player, and for her prudence. Sonna regularly works alongside 31st member Dade.

The image above is also Yosari in a different artstyle.