Who Is The Main Antagonist In 'The Underworld Trials Of Luna'?

Betrayed by her mate. Replaced by her best friend. Marked a traitor. Her Alpha mate Kael stood by and did nothing while she was being ridiculed. Now that she's gone he's obsessed with control. Selene Blackmoor was treated like a slave. She was the Luna, but her people never respected her because she was once an orphan. They said she never really belonged. On her night of her execution, Selene leaves and swears that she’ll never kneel again. But when she flees into the enemy land, she discovers two shocking truths: her greatest rival may be her only ally—and she is the lost heir to a bloodline powerful enough to change the fate of every pack. Now, Selene isn’t just surviving. She is becoming and she is coming for vengeance.

On her twenty-first birthday, Aria was murdered. She caught her fated mate, Alpha Jaxon, in bed with her younger sister, Sienna. Instead of an apology, her own family held her down and forced her to drink a chalice of deadly Wolfsbane so her sister could steal the title of Luna. But the Moon Goddess wasn't finished with Aria. Waking up in a cold sweat, Aria realizes she has been reborn on the morning of her tragic birthday. She has twelve hours before the ceremony begins. This time, she knows exactly who the snakes are, and she is ready to play their game. To survive, she must reject her fated mate before he can betray her. But her plans are thrown into chaos when the most ruthless, terrifying predator in the werewolf world arrives at her pack borders: Alpha Ethan, the Lycan King. When their eyes meet, Aria's wolf whispers an impossible word: Mine. Will Aria get her ultimate revenge, or will she become the forbidden prey of the Lycan King?

Selene Nightshade, the daughter of a powerful alpha, was fated to be the Luna of the ruthless Alpha Kieran Blackwood. But on the night of their mating ceremony, he rejected her in front of the entire pack, choosing her stepsister instead. Broken and humiliated, Selene was cast out, left to fend for herself as a rogue. But Selene’s story didn’t end in exile. The Moon Goddess had bigger plans for her. She was taken in by a hidden pack—one of ancient power and dark secrets. There, she unlocked her true potential, her bloodline linked to a long-forgotten prophecy. Now, stronger than ever, Selene returns—not as the weak girl Kieran rejected but as the Queen of Rogues, commanding forces that could bring the werewolf world to its knees. Kieran realizes too late that his mate bond with Selene never faded, and now, he is haunted by the woman he betrayed. But she’s not the same girl who once loved him—she’s out for revenge. And worse, another powerful Alpha, a mysterious and dangerously charming rogue king, has set his sights on Selene. Now, caught between the mate bond she can’t escape and the tempting darkness of a new love, Selene must decide—does she destroy the mate who shattered her, or does she reclaim her destiny and rise as the most powerful Luna the werewolf world has ever seen?

"My mate is the man who murdered my sister," Lucia whispered, her voice shaking. Julius’s eyes flashed with hurt and fury. "I don’t know who you think I am, Lucia, but I will prove the truth, even if it breaks us both." She swore to kill him. Fate swore to bind them. Ten years ago, Lucia Wright watched her sister, Teja, die at the hands of a man whose honey gold eyes she could never forget. Since that night, her life has been nothing but prisons, rogues, and blood-soaked promises of revenge. At the Moonbane Festival, the goddess finally grants her a mate. But when the mask falls away, she recognizes him, Alpha Julius of Rivermist Pack. The man she believes murdered her sister. Lucia accepts his mother’s sudden proposal, not out of love, but to finish what she started, to kill him from within his own home. Yet the mate bond burns hotter than her hatred, and every stolen touch threatens to unravel her carefully built rage. Julius has secrets of his own, enemies in the shadows, a rival Alpha bent on his ruin, and a past drenched in sins he can’t escape. As truths twist and betrayals surface, Lucia must decide, will she cling to vengeance, or surrender to the bond that defies her every oath? In a world of demons, rival packs, and blood debts, love may be the deadliest trap of all.

I stand before the pack members, condemned by whispers and stares that cut deeper than any blade. Branded a killer, but I am no murderer. Yet, their accusations cling to me like a shroud, suffocating every shred of hope within me. “I’ll never reject you, Ivanna, but I’ll make your life hell.” His words echo throughout the hall. A cruel reminder of the torment that awaits me. “I’ll forever punish you for what you did to me and the pack.” My mate’s voice, once a source of strength, now drips with venomous hatred. “You’ll remain as my mate, and I’ll remain your nightmare.” “I didn’t kill her!” I protest, but he sees only a liar, a traitor to the pack. His fist hits my cheek, a brutal punishment for crimes I did not commit. “Liar!” He barks. “You killed her. And I’ll do the same to you. Slowly. Painfully. Until you’re choking on your last breath and desperately ready to tell the truth. That you killed her.” —---------------------------------------------------- When the Luna mysteriously dies before my eyes, everyone tags me as her killer. I go through hell and back. My life becomes an endless circle of misery. But I won’t break. I won’t give in to my abusers, no matter how brutally they try to break my soul. I’m determined to fight till the end. Until I’ve proven to them that I’m not the Luna’s Killer.

A wolfless Luna returned stronger than ever!! Betrayed by the ones she trusted the most, Sapphire wanted nothing more than to get revenge for the wrong that was done to her. Her prayers were answered when she was granted a second chance at life and now she's back to pay those who betrayed her and punish them for their betrayal. Using the events of the past, Sapphire must try to avert the impending dangers that awaits her and prevent history from repeating itself again. But unknown to her, there are more enemies than she expected and the battle has only just began.