Ernest Borgnine and Tim Conway
Mermaid Man and Barnacle Boy
for Mermaid Man and Barnacle Boy in SpongeBob Universe Guest Stars
Suggested by batfan1220
Source: https://spongebob.fandom.com/wiki/Mermaid_Man_and_Barnacle_Boy
A list of every guest star there has ever been in the history of the SpongeBob Universe.
