Are There Any Completed Ben 10 Harem Fanfiction Series?

Ben 10 fanfictions are a wild ride, especially when it comes to harem stories. Over the years, I've stumbled across quite a few completed series that explore this trope, though the quality and tone vary wildly. Some stick close to the original show's vibe, while others take creative liberties that border on the absurd. One memorable series I came across was 'Omniverse of Love,' which wrapped up a few years back. It had Ben juggling relationships with Gwen, Julie, Looma, and even a reformed Charmcaster—definitely not something you'd see in the actual cartoon, but it was oddly compelling in its own messy way.

Another completed gem (or guilty pleasure, depending on who you ask) is 'Hero's Heart,' where the harem includes not just human characters but also aliens like Attea and Ester. The author went all-in on world-building, weaving in alternate timelines and power struggles that made the romantic entanglements feel like part of a bigger saga. It's cheesy at times, but the commitment to tying up every subplot by the end impressed me. If you're into crossovers, 'Tennyson's Multiverse Harem' is a finished fic that throws in characters from other franchises, like Starfire from 'Teen Titans' and She-Ra, which somehow works because the writer balanced the chaos with genuine character moments.

Of course, harem fics aren't everyone's cup of tea—they often lean into wish-fulfillment or over-the-top drama. But if you're curious, these completed ones at least offer closure, unlike the countless abandoned WIPs out there. Just brace yourself for some cringe alongside the occasional heartfelt scene.

I wonder if the 'Celestial Madonna' arc from the old 'Avengers' comics could be a good template for a 'Ben 10' harem fic. Sounds weird, but hear me out: a prophecy says Ben's child will be important to the universe, so multiple factions present candidates. It's a harem with a built-in, high-stakes plot reason and a potential endpoint (the birth of the child). It also introduces conflict because not all candidates are willing, and Ben himself might resist being a pawn.

If anyone writes this, please finish it. That's a premise with legs. It's less about wish-fulfillment and more about destiny, responsibility, and choice. A completed fic with that kind of structure could be fantastic. Consider this a prompt for any aspiring writers out there who want to tackle the trope with a fresh angle.

I found one a while back called 'Legacy of the Plumber' that was finished. It was a sequel to another story, but it stood alone. It had Ben, a few years older, dealing with intergalactic diplomacy where marriage proposals were a constant nuisance. It handled multiple romantic interests with a bit more nuance—some were political, some genuine, some unrequited. It felt more like a messy adult love life than a fantasy wish-fulfillment. And it had a definitive, bittersweet ending that didn't pair him off with everyone.

It's not a traditional 'harem ending' where everyone wins, but it's a complete narrative that engages with the concept intelligently. Those are the gems worth finding. Try searching for 'aged-up' or 'post-canon' tags alongside your harem search.