Meggie's Teen Titans fanfics

Baby Mine
Starfire befriends an acting elephant named Orville, who is falesly accused of holding her hostage. That night, Starfire visits an imprisoned Orville as he swings her on his trunk. The next morning, Orville has been euthanized, and it's up to Robin, Beast Boy, Raven and Cyborg to find out who is behind this.

Robin's Galaxy
Satan is now determined to destroy the universe, so he kidnaps and weakens Raven, prompting Robin to go on a rescue mission across the galaxy. Meanwhile, Starfire, Beast Boy and Cyborg are possessed and he gets help from Becky, a space expert.

Robin's Odyssey
Slade kidnaps Starfire so he can marry her and have legal claim over the galaxy. Robin goes on a globe-trotting adventure, and there's an epic battle at the end.