Fourth Wing » Liam Mairi

Liam Mairi

Liam Mairi is a rider in Fourth Wing and a marked child of the Tyrrish Rebellion. He is the older brother of Sloane Mairi and the foster brother of Xaden Riorson, with whom he shared a close bond.

Liam Mairi
Name Liam Mairi
Age 20 (Fourth Wing)
Species Human
Status Deceased (Fourth Wing)
Quadrant Riders Quadrant, Basgiath War College
Rank/Title Cadet
Signet Farsight, Ice Wielding
Eye Color Blue
Hair Color Light blond
Dragon Bonds Deigh (Red Daggertail dragon) †
Family Colonel Aetos (father), unnamed mother
Love Interests Isaac Mairi † (father), Colonel Mairi † (mother), Sloane Mairi (sister), Duke Lindell (foster parent), Xaden Riorson (foster brother)
Appears in Fourth Wing (2023)

Biography

Liam Mairi, born in 613 AU, is the son of Isaac Mairi and Colonel Mairi. Liam Mairi, born in 613 AU, is the son of Isaac Mairi and Colonel Mairi. After his parents’ deaths during the Tyrrish Rebellion, he was fostered by Duke Lindell in Tirvainne with Xaden Riorson. At Basgiath, Liam entered the Riders Quadrant in the same year as Violet Sorrengail. He distinguished himself early—finishing the Gauntlet fastest among his year, winning assessment day challenges, and bonding with Deigh, a red dagger-tail dragon, during Threshing.

As a marked child, Liam Mairi bore a rebellion relic that covered his arm, given by his mother as protection during the executions of rebellion leaders. He was assigned to Second Squad, Tail Section, Fourth Wing. Liam watched over Violet, particularly after a threat from Amber Mavis, and stood by her during Archives Duty and in the chaos of squad battles. He used his signet Farsight to detect Venin in the fog near Resson, and revealed a second signet—Ice Wielding—during that battle as well. When Deigh died during the Venin attack, Liam died shortly after, his life bound to his dragon.

Physical Description

Body & Build

  • Tall and broad-shouldered
  • As tall as Sawyer and as built as Dain
  • Stands a head taller than most other riders
  • Strong, muscular frame

Hair

  • Spiky light-blond hair.

Eyes & Skin

  • Blue eyes
  • Prominent nose
  • Dimples when he smiles
  • Sprawling rebellion relic starting at his wrist and disappearing beneath his tunic sleeve

Clothing & Gear

  • Wore standard rider gear
  • Carried a Gauntlet patch for being the fastest to complete the Gauntlet

Powers

Lesser Magic

Through his bond with Deigh, Liam Mairi could perform lesser magic, including opening doors without touching them, moving with preternatural speed, manipulating mage lights, powering ink pens, and placing runes

Signets

Farsight: Liam’s primary signet, allowing him to see vast distances with extreme clarity, even through obstacles such as fog. His pupils dilated whenever he used this ability. He demonstrated its effectiveness during Fourth Wing by detecting venin hidden within the mist.
Ice Wielding: Liam’s hidden second signet, inherited through Deigh’s previous bond with one of his ancestors. This rare ability allowed him to summon and manipulate ice, revealed only during the Battle of Resson.

Abilities

Combat Skills

Liam was renowned for his strength and skill. On Assessment Day, he defeated every opponent with ease, earning a reputation as one of the most formidable cadets. Cianna noted that, along with Heaton, he would dominate the mat in the squad challenge competitions.

Relationships

Jesinia Neilwart Liam never developed a formal romantic relationship during his time at Basgiath. However, he shared a playful flirtationship with Jesinia Neilwart, exchanging light banter and subtle moments of connection. While this bond never grew into a full romance, it revealed a softer, more humorous side of Liam amidst the harsh realities of war.
Xaden Riorson After the rebellion ended, Liam and Xaden were sent to the same foster home in Tirvainne. They grew close, like brothers, with Xaden teaching Liam how to fight and preparing him for life in the Riders Quadrant.
Violet Sorrengail Because of his loyalty to Xaden, Liam took it upon himself to watch over Violet at Basgiath, protecting her from threats within the Riders Quadrant. Their friendship deepened through shared trust, light teasing, and loyalty.
Sloane Mairi Sloane is Liam’s younger sister. They were separated after their parents’ deaths during the Tyrrish Rebellion and never reunited before his passing.

Dragon

Deigh

Liam was bonded to Deigh, a powerful red dagger tail dragon. Through Deigh, Liam was able to channel lesser magic and access his signets of Farsight and Ice Wielding. Their bond ended during the Battle of Resson when Deigh was killed, which led to Liam’s own death as a result of the rider–dragon connection.