Johnny Erain

Johnny Erain is the realistic fish head who frequently announces/hosts various news reports and other events in Bikini Bottom. He also sings in the SpongeBob SquarePants theme song. His name was revealed in the Battle for Bikini Bottom video game, where he is the announcer for the main boss fights.
Johnny has also been the announcer at other events, such as the 21st Fry Cook Games. He was the narrator of the King of Karate video in "Karate Island", and voiced the loudspeaker at the Bikini Bottom Zoo in "The Smoking Peanut". In addition to announcing events in Bikini Bottom, Johnny also serves as a news anchorman for the Bikini Bottom News. Most of the news reports he gives are regarding disasters in Bikini Bottom, such as in "Wormy", where he warns the town about the "monster", and in "Nasty Patty," when he reports the warning of a man who pretends to be a health inspector to obtain free food.
The only times where he has ever interacted with the main characters (as he usually only appears on a screen) are in "No Free Rides" and "Procrastination", and both of these were during dream/fantasy sequences. His voice is often heard when he himself is not shown, so it is uncertain if he is speaking during these instances, as in "No Free Rides" and "Suction Cup Symphony", his voice is different from his usual one. He also appears during the theme song, when the line "Then drop on the deck and flop like a fish" is sung. He is voiced by Doug Lawrence, except for "Suction Cup Symphony" where he was voiced by Tom Kenny.
In "The Fry Cook Games" he actually mentions that he is a realistic fish head.