Trucker

The trucker  is an incidental character who appears in a variety of  episodes. He is a truck driver in most of his appearances, starting with "The Gift of Gum."

Description
He is an obese, light emerald green fish with a light green dorsal fin and wears a red cap, a red tiled shirt, faded blue pants, and black shoes.

"The Gift of Gum"
The wheel of his truck, Old Blue, gets stuck in the gum that gave  in celebration of Best Friends Day.

"20,000 Patties Under the Sea"
When  insults Incidental 152, Incidental 115 takes offense and calls him out on talking to her son like that, so Plankton fires back at her. Then he comes out and says he cannot talk about his wife in such a negative matter. When Plankton calls him fat, his grandmother comes out in his defense.

When Plankton turns to leave, the trucker and his family begin to throw rocks at him and his submarine. When they run out, SpongeBob and Patrick sell them  that Patrick left unattended, therefore burned, in their sub.

"Slide Whistle Stooges"
He throws himself off his truck after he can't stand anymore 's slide whistle noises.

"Squid Baby"
He falls asleep when he's about to run over Squidward. However, Patrick lifts up the road, turning it into a ramp and making the truck fly away.

"Food Con Castaways"
He is seen honking his horn when SpongeBob makes the signal.