Gubler issued a statement to TVLine about his cameo, saying, "It's a joy to get to tell stories with people you love so I will always cherish any moment, big or small, that I get

The star also chats about being slapped by the late Linda Lavin ("what an honor") and acting opposite her sons, who play her TV sons Henry and Michael.

Matthew Gray Gubler's Reid — and other OG characters — were referenced during a 'Criminal Minds' funeral for JJ's husband