Fourth Wing » Sgaeyl

Sgaeyl

Sgaeyl is a navy daggertail dragon bonded to Xaden Riorson. She is mated to Tairneanach, and together they share one of the strongest dragon bonds in centuries.

sgaeyl xaden
Name Sgaeyl
Gaelic name meaning Shadow
Age 50+ (fifty years younger than Tairneanach)
Species Dragon
Status Alive
Gender Female
Rider Xaden Riorson
Tail Daggertail
Scale Color Navy blue
Appears in Fourth Wing (2023), Iron Flame (2023), Onyx Storm (2025)

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Biography

Sgaeyl is a rare navy-blue daggertail dragon. She is bonded to Xaden Riorson and mated to Tairneanach, with whom she shares one of the strongest mating bonds in centuries.

Born from the Gormfaileas line, Sgaeyl was previously bonded to Xaden’s grandfather before refusing to bond for fifty years. During Xaden’s Threshing, she chose him as her rider despite tradition warning against bonding direct descendants of former riders. This decision granted Xaden not only the shadow-wielding signet but also a second, rare inntinnsic signet.

In Fourth Wing, Sgaeyl plays a central role in shaping Xaden’s authority and survival, while also influencing the fate of Violet Sorrengail and her bond with Tairneanach. By Onyx Storm, her loyalty to Xaden is tested following his transformation into a venin, during which she remains silent for weeks before confronting him directly. Fierce, ruthless, and feared even among dragons, Sgaeyl is nonetheless protective of her rider, cementing her place as one of the most formidable dragons of the Empyrean.

Physical Description

  • A massive navy-blue daggertail with glistening horns sweeping above her head.
  • Golden eyes, wide nostrils, and a commanding presence.
  • Knifelike spikes at the tip of her tail.
  • Wing joints tipped with sharp talons.

Powers and Abilities

Sgaeyl channels immense magical power through her bond, granting her rider access to lesser magic and rare signets. Her strength enabled Xaden to manifest both shadow-wielding and inntinnsic abilities. Like all dragons, she can fly, breathe fire, and wield her daggertail, talons, and fangs as weapons. She communicates telepathically with Xaden, other dragons, and gryphons, and has the rare ability to sense runes and reach other minds at will.

Relationships

Tairn Sgaeyl is mated to Tairneanach, forming the strongest dragon mating bond in centuries. Together they have taken on a protective role over Andarna, effectively adopting her. Their connection is so deep that long separations endanger them both, creating tension when their riders’ postings pull them apart. Their feelings often bleed into Xaden and Violet, intertwining the fates of riders and dragons alike.
Xaden Riorson Sgaeyl bonded Xaden Riorson during his Threshing, defying the taboo against bonding descendants of former riders. As a result, Xaden developed two signets, shadow-wielding and inntinnsic. Fiercely loyal to him, Sgaeyl remains both his partner in battle and his fiercest protector, though their bond is strained after his transformation into a venin.
Xaden’s Grandfather Before Xaden, Sgaeyl was bonded to his grandfather. He died before graduation, leaving her unbonded for decades until choosing Xaden.