Authors:

Most Shadowhunters get their first Marks at twelve. It must have been in your blood.” “Maybe. Although I doubt most Shadowhunters get a tattoo of Donatello from the Teenage Mutant Ninja Turtles on their left shoulder.” Jace looked baffled. “You wanted a turtle on your shoulder?” -Jace & Clary, pg. 314-

Cassandra Clare (2012). “Cassandra Clare: The Mortal Instruments Series (5 books): City of Bones; City of Ashes; City of Glass; City of Fallen Angels, City of Lost Souls”, p.301, Simon and Schuster
Most Shadowhunters get their first Marks at twelve. It must have been in your blood.” “Maybe. Although I doubt most Shadowhunters get a tattoo of Donatello from the Teenage Mutant Ninja Turtles on their left shoulder.”