RJ is a Family Guy character from Wisconsin, according to creator Seth MacFarlane.
He first appeared in "Boys Do Cry", where in an interview with Tom Tucker he claims that he once saw Bigfoot while attempting to make love with his girlfriend at the lake. However, due to the amount of mosquitoes in the area, his girlfriend said that "there was no way".
MacFarlane noted in the commentary for "Boys Do Cry" that RJ was a liked character but just couldn't fit into episodes well. While credited as being from Wisconsin, he is also claimed as both Canadian and as a "Yooper", which is someone from the Upper Peninsula of Michigan.
RJ is voiced by Mike Henry.