Tira

Tira is the leader of Ijaniya and the triplet sister of Tia and Tina.

Appearance
The details of Tira's appearance are unknown. However, being triplets, it can be assumed she looks just like her younger sisters, Tia and Tina.

Personality
It can be assumed that, unlike her Tia and Tina, Tira is actually loyal to Ijaniya, as she remained with the group after both of her sisters defected and eventually made her way up to becoming the organisation's leader.

Background
Tira grew up alongside her triplet sisters Tia and Tina as part of the organisation of assassins known as Ijaniya. However, her sisters went on a mission to assassinate the Adamantite-Ranked Adventurer Lakyus Alvein Dale Aindra and never returned, as they instead ended up joining the latter's adventurer group, Blue Roses. Tira, on the other hand, stayed with Ijaniya and eventually made her way up to becoming the group's leader.

The Bloody Valkyrie Arc
This character was briefly mentioned by Brain Unglaus, when his comrades in Death Spreading Brigade alerted everything in their base of an attack by a young woman. His mind came to give women who had the power to do this much damage to their men. One of them was a woman who said to be the strongest assassin in the Empire.

The Witch of the Falling Kingdom Arc
Tira was mentioned by Albedo to her master Ainz Ooal Gown to be assisting in training the Hanzos.

Abilities and Powers
As the leader of the famous assassination group Ijaniya, it can be assumed that Tira is an assassin on-par or superior to her sisters.

Tia & Tina
Tia and Tina are Tira's younger triplet sisters. Their exact relationship is unknown. However, considering they both left Ijaniya while Tira stayed loyal, it can be assumed that their current relationship is very strained.

Ainz Ooal Gown
The fact that she is the currently training Nazarick's Hanzos implies that Tira is either loyal to the Sorcerer King or they have some sort of business relationship.

Trivia

 * Tira goes mostly unnamed throughout the Web Novel and much of the Light Novel series until Volume 14.