Mayor

The mayor is the mayor of the fish tanks.

Personal life
When Oscar received his perfect attendance award, the mayor shook his fin and said "You've made us proud, Oscar". It was then revealed that it was infact the following day when Oscar should receive the award, prompting the mayor to say "You've NOT made us proud, Oscar". The next day, Oscar made it on time and received the award and the mayor said "Hey, good to see ya again" and shook Oscar's fin. The mayor appeared in a picture with Oscar, presumably in a newspaper. ("Run, Oscar, Run")