Riley is a character that appears in Grounded. Uncle Grandpa helped him go to a party without realizing he was actually grounded. After several attempts to get him back home, Uncle Grandpa sends him to a hellish dimension to trick him into going back into his room and finishing his punishment. This, however, scarred Riley for life and now he never wants to leave his room. He is voiced by Scott Menville.
He has brown hair styled in a mullet, pimples on his face, and a skull shirt with a denim vest over it.
He is a rebellious and careless teenager who likes to party and doesn't do well in school.
Riley has a poster in his room that says Clam Shucker with lightning bolt coming from it, this referencing the term "Shell Shock".