SpongeBob SteelPants (or Robot SpongeBob) is a robot from the Console and GBA versions of Battle for Bikini Bottom.
On the console version, it looks like SpongeBob in Karate gear, but its holes light up (until you break them), is bigger, is made of metal, has fire coming out of his pants instead of legs so it can fly, and you can see into its body through his eyes. On the GBA version, it looks the same except has a pair of red eyes, a Krusty Krab uniform hat, and Spat replacing its right hand (much like the Hash Slinging Slasher).
- Karate Spin
- Karate Chop
- Karate Yell (Screams "KAH-RAH-TAE!!!" so loud, the words are shot towards the enemy)
- Krabby Patty Bomb (Makes Krabby Patty Bomb and throws it at the ground)
 Inside the Robot
Inside there is many platforms with lots of robots. There is gears and lasers. Oddly, you can also find flying trampolines. There are glowing bars on the platforms and inside the brain. If you break them, it malfunctions.
Before it was destroyed, it was going to be Robo-Plankton's bride.
SpongeBob used his bubble soap to create weapons that temporarily destroyed SteelPants. However, it was fixed during the Remodel. SpongeBob went inside and destroyed the glowing bars, causing the robot to fall to the ground