Sonic the Hedgehog and Professor Layton Crossovers
Chasing Immortality by Nio Hashiri's Riddles reviews
After receiving two letters: one from his old student Janice Quatlane and another from Mobian detective Shadow Trystan, Hershel Layton and his eager apprentice Luke Triton are pushed into a complicated mystery not only about Ambrosia but about missing schoolgirls and Shadow's childhood friend Sonic Joneson, who seems to be the key to the entire mystery. But is the legend true?
Rated: T - English - Adventure/Mystery - Chapters: 3 - Words: 4,652 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 11/23/2016 - [Melina W., Sonic] H. Layton, Janice Q.
Professor Layton & Sonic the Hedgehog: The Enigmatic Entity by S0NICFan111 reviews
A confusing mystery in London turns into something big: impossible magic, hundreds of mysterious deaths, and possessed friends. A powerful but dangerous entity within Station Square plans to destroy the heroes' worlds in baffling ways. It's up to Sonic and Professor Layton to crack this puzzle and stop him before it's too late! AU
Rated: K+ - English - Adventure/Mystery - Chapters: 1 - Words: 1,223 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 8/9/2015
ze phantom hedgehog of ze opera by Naruto the hedgehog reviews
i come up with horrible summaries...the summary is within the sotry...
Rated: T - English - Suspense/Romance - Chapters: 1 - Words: 803 - Reviews: 1 - Published: 11/25/2011 - Sonic, H. Layton
Used by your Pet by SamCyberCat reviews
After escaping from Zone Jail, Scourge finds himself as a quite willing prisoner to a Layton-crazed girl called Rosetta. Professor Layton / Archie Sonic crossover.
Rated: K+ - English - Chapters: 1 - Words: 835 - Reviews: 2 - Favs: 4 - Published: 9/29/2011 - Scourge - Complete