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The Incredible Mr. Limpet makes a cameo in Ariel's Undersea Adventure. Voiced by Don Knotts, Mr. Limpet is a caricature of the comedic legend, complete with glasses and oversized incisors.

Known for neurotic characters, Don Knotts appeared in several live-action Walt Disney features, including The Apple Dumpling Gang (1975), The Apple Dumpling Gang Rides Again (1979), Gus (1976), No Deposit, No Return (1976), Herbie Goes to Monte Carlo (1977) and Hot Lead, Cold Feet (1978).