Why Spongebob, of course.but in one episode its Patrick
spongebob
Spongebob and patrick
The cartoon show that the fictional character Sandy Cheeks appears on is the Nickelodeon show Spongebob Squarepants. She can be considered the love interest of the main character Spongebob Squarepants.
SpongeBob SquarePants is the main character of the fictional Nickelodeon animated series SpongeBob SquarePants. He was designed by marine biologist and animator Stephen Hillenburg
to make people laugh/entertain main character complete dumb-ass
SpongeBob is an animated character that appears on the cartoon, SpongeBob SquarePants. The cartoon first premiered on May 1, 1999.
spongebob
He wasn't on Spongebob.
If by "acts the sponge", it is meant the main character, then Tom Kenny does his voice.
The character on Spongebob Squarepants is Squidward, Spongebob's coworker.
I personally think Fred is because he keeps shouting "My Leg!"
Spongebob Squarepants is a fictional character and does not exist in reality.