Spongetron is the futuristic SpongeBob from the year 4017. His overall appearance is like SpongeBob SquarePants. He was seen in the episode: SB-129. When Squidward arrived in the future, he shortly met SpongeTron and Patron in the kitchen area of the Krusty Krab. SpongeTron was cloned 486 times and all of them is a different letter of the alphabet. In the year 4000, there are 486 different letters. Like his present-day counterpart, he is voiced by Tom Kenny.
His best friend is Patron and they both love Jellyfishing. SpongeTron has really 489 because you can see SpongeTron X, SpongeTron Y, and SpongeTron Z in SB-129 although one of the SpongeTron's disappeared and marked a cartoon goof. His first words after seeing Squidward were 'Holy' Krabby Patties!, probably meaning that Krabby Patties are still in the future but may look chrome. He makes a computer click sound to turn robotic.
SpongeTron is SpongeBob's part-robot descendant. He has all of his holes, he is yellow, wears his Krusty Krab employee hat and wears his outfit. SpongeTron has all of the looks of SpongeBob but he does not walk. Instead his legs are jets, however, SpongeBob walked to Squidward in SB-129 once. He also can pull his tie to make a robotic arm come out of his hat holding a brick that then he will drop, which he used on Squidward. He also has a laser chrome hammer that that he used to free Squidward from the ice.
- "I am SpongeTron! Welcome to the future!"
- "Oh yeah, that was the can opener room."
- "Holy Krabby Patties, a frozen Cephalopod!"
- "Hi, Patron!"
- "Sure, all 486 of them!"
- "Just ask my clones, SpongeTrons X ,Y, and Z."
- "Why didn't you just ask? The time machine is down the hall to the left."
- Harold SquarePants
- Sherm SquarePants
- Gretchen SquarePants
- Grandma SquarePants
- Grandpa SquarePants
- Uncle Cap'n Blue SquarePants
- Cousin BlackJack SquarePants
- Stanley S. SquarePants
- Todd SquarePants
- SpongeTron is one of the only good-side and good system-like computer-like robots in the SpongeBob TV series.
- SpongeTron is most likely a cyborg. Because of his Spongy talk, he is also part Sponge.
- He seems a little smarter than the 'current' SpongeBob.
- The quote "I am SpongeTron" is also a lyric in When Worlds Collide