Monster Mercenary Mates Series by Robin O'Connor

4.61 · 28 ratings
  • Caught by the Alien Mercenary (Monster Mercenary Mates #1)
    #1

    Caught by the Alien Mercenary (Monster Mercenary Mates #1)

    Robin O'Connor

    Rated: 4.63 of 5 stars
    · Steam rating: 5 of 5
    · 8 ratings · published 2024

    Turns out, the most notorious Mercenary Captain in the quadrant takes offense when he finds a human stowed away in his private quarters.ManyinOnce, I was a renowned archaeologist, then I got abducted. I’m so sick of my life being beyond my control, that when it happens again, I fight back. I escape and hide away on the first ship I can find, hoping to get far away and then plead my case so they can take me back to the human sanctuary... more

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  • Stolen by the Alien Mercenary (Monster Mercenary Mates #2)
    #2

    Stolen by the Alien Mercenary (Monster Mercenary Mates #2)

    Robin O'Connor

    Rated: 4.13 of 5 stars
    · Steam rating: 4 of 5
    · 8 ratings · published 2024

    Kidnapped, locked up, and then stolen by a ruthless, sexy mercenary.HarperKidnapped from my dorm room. Locked in a vault and left to die. And then? Stolen by a ruthless mercenary who claims I’m his mate. What’s a girl supposed to do? Run? Hide? Or surrender to those smoldering looks, the steamy touches, and the sizzling kisses?When a nasty alien crimelord tries to kidnap and sell me for the information he stored on a chip inside my head... more

  • Betrothed to the Alien Mercenary (Monster Mercenary Mates) (Monster Mercenary Mates #3)
    #3

    Betrothed to the Alien Mercenary (Monster Mercenary Mates) (Monster Mercenary Mates #3)

    Robin O'Connor

    Rated: 4.86 of 5 stars
    · Steam rating: 5 of 5
    · 7 ratings · published 2024

    Trust no one. Hide who I am. Complete the mission. Easy... until I meet him.EvieWhen a dying Xurtal princess makes me promise to save her planet, I have no choice but to take her place. Me, a human girl, pretending to be an alien royal. To survive the assassination attempts, I need a bodyguard. Enter cocky, infuriating, and scorchingly hot.He has to pretend to be my mate to protect me. A fake fiancé for a fake princess... more

  • Entangled by the Alien Mercenary (Monster Mercenary Mates #4)
    #4

    Entangled by the Alien Mercenary (Monster Mercenary Mates #4)

    Robin O'Connor

    Rated: 5.00 of 5 stars
    · Steam rating: 5 of 5
    · 3 ratings · published 2025

    Out from under my brother’s thumb, I want only one survive. Falling for my green protector? Definitely not part of the plan.ElyssaI’ve spent my life under my brother’s iron control. When I finally escape, my goal is deliver the data I stole to the one person I can trust. But fate has other ideas.An explosion leaves me stranded and surrounded by my brother’s vengeful gang... more

  • Saved by the Alien Mercenary (Monster Mercenary Mates #5)
    #5

    Saved by the Alien Mercenary (Monster Mercenary Mates #5)

    Robin O'Connor

    Rated: 5.00 of 5 stars
    · Steam rating: 5 of 5
    · 2 ratings · published 2025

    Alone in the Zeta quadrant, I made one reckless choice. Now I’m pregnant, trapped on a pirate ship, and my only ally is a gruff, brooding cook with a dark past. RubyAs a lone human in the Zeta quadrant, my life revolves around survival. It’s isolating, and in a moment of weakness, I give in to my deepest desire—to have a child. Now, pregnant and more vulnerable than ever, everything is twice as terrifying.When I discover smuggled drugs aboard my ship, I’m furious... more

  • Chased by the Alien Mercenary (Monster Mercenary Mates #6)
    #6

    Chased by the Alien Mercenary (Monster Mercenary Mates #6)

    Robin O'Connor

    Rated: 0.00 of 5 stars
    · 0 ratings · published 2025

    He doesn't speak. He growls. And when he looks at me, I forget Earth ever existed. LyraOne minute I was photographing wildflowers. The next, I woke up in a cage lightyears from Earth—barely clothed, definitely for sale, and completely screwed. Until he tore the doors off my prison.Solear isn’t human. Not really. He doesn’t talk. He stalks. Moves like a predator, fights like a weapon, and watches me like I’m his next obsession... more

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