Morty is the dim-witted grandson of Rick Sanchez. He is fourteen years old.
Morty was originally created by Justin Roiland as part of a parody of "Back to the Future" in the short "The Real Animated Adventures of Doc and Mharti". The character and voice were retooled with Dan Harmon's help for "Rick and Morty", a cartoon on Cartoon Network's Adult Swim.
The comic version of Morty soon followed, written by Zac Gorman and drawn by CJ Cannon.
The television version of Morty takes place in Dimension C-137 while the comic book version is in Dimension C-132. There does not seem to be much difference between the two versions outside the adventures each partakes in.
Major Story Arcs
Desperate to show his father Jerry that jobs are stupid, Morty teams up with Rick to make money on the intergalactic stock exchange. Due to legal complications, Rick can't have his name on the registration documents. Using a device that Morty believes looks into the future, Rick makes he and Morty billions of dollars, at which point Morty believes that he doesn't need Rick anymore. Morty then finds out that the device does not see the future but combines (and destroys) successful, alternate timelines. He and Rick are arrested and taken before the Time Court.