As LaMarche explained on the panel:
“When [the showrunners] explained to me who he was I just went, alright. So I thought about all the stentorian, hamball, cheeseball actors that I could think of and just rolled them all into one. The guy who played — and I know these guys are all talented in their own right, and you’re doing a character — he’s a little bit J. Peterman from the ‘Seinfeld’ era, he’s a little Lyle Waggoner, he’s a little bit ‘Roger ‘Ramjet’ Gary Owens.”
J. Peterman is a character played by John O’Hurley, and actor who has been working in television since 1983, famously appearing in 75 episodes of the soap opera “Santa Barbara.” He also starred in the little-remembered 1994 TV series of “Valley of the Dolls.” O’Hurley played J. Peterman in 20 episodes of “Seinfeld.” Lyle Waggoner, as mentioned, appeared on “The Carol Burnett Show,” but also starred in a few notable B-movies like “Catalina Caper” and “Journey to the Center of Time.” He was one of the main cast of the 1976 TV series “Wonder Woman,” and appeared in single episodes of dozens of hit TV shows.
“Roger Ramjet” was a long-running superhero animated series that ran from 1965 to 1969. The title character had magical pills (called PEP pills, in case the illicit drug metaphor wasn’t clear) that gave him superpowers for 20 seconds at a time. Roger was played by Gary Owens, the baritone-voiced announcer of “Rowan & Martin’s Laugh-In,” and the original voice of Space Ghost (not the one who hosted “Coast to Coast”).