In which year, did this earliest guest star in 1999 for SpongeBob SquarePants stop providing the voice?
Mermaid Man and Barnacle Boy Mermaid Man and Barnacle Boy are fictional superheroes in the Nickelodeon animated television series "SpongeBob SquarePants". Mermaid Man was voiced by Ernest Borgnine from 1999 to his death in 2012, and Barnacle Boy is voiced by Tim Conway. Mermaid Man and Barnacle Boy were created and designed by Stephen Hillenburg. The characters debuted on August 21, 1999 in the series' episode "Mermaid Man and Barnacle Boy".
Bob Johnson (actor) Robert Cleveland Johnson (May 4, 1920 – December 31, 1993), known professionally as Bob Johnson, was an American actor and voice actor who played supporting roles on series television and in films from the late 1950s until a few years before his death. He frequently provided the voices of numerous alien creatures on "The Outer Limits"—including the episode "The Guests"—for which he was uncredited. He may have been involved in English-language dubbing on lesser-known spaghetti westerns. However, Johnson is probably best known as the "voice behind the scenes", who gave Special Agents and Jim Phelps their recorded mission briefings on both incarnations of the "" television series.