SpongeGar SquarePants is SpongeBob's ancestor. SpongeGar is likely to be more advanced than the Primitive Sponge but not as SpongeTron then due to having developed clothes, a language system, domestication and a curiosity for new discoveries such as cooking food. He was mistaken by Squog (the prehistoric version of Squidward) to be dumb, but he has proven to be somewhat intelligent in that episode. His pet snail Prehistoric Gary was a lot larger than the present Gary raised by the normal SpongeBob. This Prehistoric Gary was most likely an ancestor of the normal Gary. His best friend is Patar which is Patrick's caveman counterpart. He is not the same as Primitive Sponge; he came many years after the primitive. He is curious and smarter than Primitive Sponge, SpongeGar is also an ancestor of SpongeTron. He is voiced by Tom Kenny.
Like his descendant, SpongeGar is a sea sponge, but he is drawn to resemble a kitchen sponge. SpongeGar has large blue eyes, a long, slightly curved nose, a large mouth with one buck tooth, two fang-like teeth, a unibrow, and dimples with three freckles on each cheek. He wears a brown animal skin with only a left sleeve (He also uses it as a blanket to sleep with.) He also has hair showing from his feet and hands.
Like his descendant, SpongeBob, he lives in a structure that lies near his nears as if it were a straight line. Unlike a real pineapple, the house was a simple stone house that serves as shelter like a cavern. However, the house was able to stretch easily when huge Prehistoric Gary came out. During the caveman times, to wake him up, SpongeGar relied on creatures whose roars make a powerful enough vibration to knock a rock off a shelf and onto SpongeGar as an alarm system.
SpongeBob's Atlantis SquarePantis - SpongeGar makes a cameo appearance along with Patar as Skeletons in the Museum as an object SpongeBob must photograph.
Nicktoons: Attack of the Toybots - SpongeGar is a playable character as an unlockable costume for SpongeBob.
Lights, Camera, Pants! - He appeared when SpongeBob went back in time to recruit him for the TV show.
B.C. Bowling - SpongeGar is a playable character in this game.
Unlike Primitive Sponge, SpongeGar acts more normally, possibly since Primitive Sponge was before him.
He uses a log filled with soap to blow bubbles.
He is rumored to appear in the 2015 live action film, according to previews of merchandise for the movie.