Mr. Riffin is the father of Corey and Trina. He is a single father who adopted Corey and Trina when they were babies. He has never appeared in the actual show, however he was mentioned in the episode Smash Up Terby. His voice was also heard on a tape recorder in the unaired Pilot.
- The creators have indicated there is a remote chance Mr. Riffin will appear in a future season.
- Mr. Riffin loves both his children equally, and is unaware of how evil Trina can be.
- Mr. Riffin is a fan of Grojband.
- ↑ http://neptoonstudios.tumblr.com/post/84629850038/where-are-corey-and-trinas-parents-i-heard-somewhere
- ↑ http://neptoonstudios.tumblr.com/post/58599183195/what-happened-to-the-riffin-siblings-mom-is-she-dead
- ↑ http://neptoonstudios.tumblr.com/post/53840140363/do-we-ever-see-the-parents
- ↑ http://neptoonstudios.tumblr.com/post/92664690828/the-pilot-in-smash-up-derby-you-cut-out-the-part-when
- ↑ http://neptoonstudios.tumblr.com/post/90806557723/where-are-corey-and-trinas-parents
- ↑ http://neptoonstudios.tumblr.com/post/58782147690/does-mr-riffin-favor-either-of-his-children-or-he
- ↑ http://neptoonstudios.tumblr.com/post/58746897133/does-mr-riffin-know-what-an-utter-terror-trina
- ↑ http://neptoonstudios.tumblr.com/post/58782190929/is-mr-riffin-a-fan-of-grojband