Frank is a fish who works as a lifeguard for  Goo Lagoon. He first appears in the episode " Ripped Pants."
He is a dark teal fish with faded blue lips and light orange fins and limbs. He wears a white tank top/sleeveless shirt and red shorts.
Role in series
He rushes to save
SpongeBob after the latter had crashed down with a wave and washed up on the beach. He was not amused to find out that he had faked the fall for his enjoyment.
The beachgoers push his lifeguard stand over.
He appears in the group of people who want to know how
Mr. Krabs and Plankton became rivals.
He is shown in the prison, known as
He appears again as a prisoner.
He appears as part of the angry mob.
He appears in the
Bikini Bottom Men's Choir.
He is seen as a lifeguard when Patrick, trying to catch a Frisbee thrown by SpongeBob, runs into the lifeguard stand that Frank was on, causing it to crash to the ground, making Frank angry at the duo's idiocy.
He is shown running to the
His name is revealed to be "Frank." He buys one of Plankton's
Free Sample Krabby Patty burgers.
He is shown watching Squidward play against Sandy.
He is in
Lily Plankton's sequence.
He is shown with the other
Bikini Bottomites to be climbing up ladder garbage.
He is shown at the
Krusty Krab to be complaining about not receiving mustard.
He appears morbidly obese with a bunch of trash on top of him. Until SpongeBob vacuums over him, making him a muscular and handsome-looking fish.
Frank the lifeguard's model