Three years after Gregor left the Underland and several months after the end of the 2nd Titanomachy, Gregor finds himself with Thalia Grace, the recently disgraced Lieutenant of the Hunters of Artemis in the Underland, which is embroiled in a new and terrible war. How will the Underland change them, how will they change the Underland.

After the war with Gaia all was well. For 4 years Percy had a wonderful life. But when his brother came to camp and everything changed.

Two years after the events of the Underland Chronicles, and one year after Blood of Olympus, Gregor and his family are enjoying a peaceful life far from the troubles of New York City. That is, until strange, fiendish creatures begin to appear more and more frequently, that Gregor is certain should not exist. What will he do now, as the Warrior is forcibly resurrected once more..?

The heroes of Olympus are ready for their next quest. Next stop, Underland...

Percy and Annabeth end up in the Underland after being forced to take Gregor and Lizzie to the movies. Post TLO, CoC. Complete!

After saving the world, Victoria and the rest of the crew of the argo two find an opening to another land, one where rules of the overland don't apply...

Percy and his friends discover a land unknown to the gods. Gregor's will to return to the Underland is tested by it's new threat. Post COC, Post TLO but Pre TLH Rated T because of possible death and the general darkness at times.

there is a new camper at camp halfblood and percy gets very confused around her. meanwhile in the underland the wars have come back but with a new enemy.

Younger brother of mike from the previous story has gone missing after the assult on MT.OLYMPUS. John sets out to start looking for him going through a portal to hell, Insdead he ends up at camp Rome. Next thing he knows he's in a darkroom,*Cling*he hears

This is a story of a child of athena who,along with other demigods gets sucked into the underworld...not hades palce...but the underworld in the underland chronicals books: hades mightttt be down there though: nott complete...just...on hold..

Gregor returns to the Underland and is surprised when he runs into one of his old classmates.

Aquana is a Halflander child. She is also a halfblood. What will happen when she is attacked by a monster and shows up at camp? I am horrible at summaries. Please R&R. Possible Hazard/OC set five years after COC and right after TLO maybe. Rated T because.

ima try and do my best ima be entering Gregor in chapter 4 he will save them when they get attacked by something PS.He can also see through the mist please leave comments on my first chapter telling me how i can improve please! im new to all this

Percy gets his invunerability taken away by a mysterious arrow. He then is transported to the Underland for recovery.

Set after TLO and GCC. Nico accidentally sends Annabeth and Percy into the Underland, where the find Gregor, Luxa and the other Regalians. A new prophecy is unearthed, and the quest of a lifetime begins. Percabeth. Gluxa.