Robo-Sandy has no difference in body shape from the real Sandy. The flower on her helmet is replaced by a bouncy antenna. The patch design on the suit is a bolt instead of an acorn. There are no colored stripes on her arms. Her eyes are green lenses and her mouth has a speaker. Under the head is a button that says "BOOM!"
Battle for Bikini Bottom Cutscenes
King Neptune: [Uses his magic to make SpongeBob and Patrick appear] I have brought you two here to face a great challenge! SpongeBob: I've got nerves of steel and muscles of sand! Patrick: And eyes of jelly! King Neptune: My Poseidome has been breached! By a mighty foe who you must vanquish. SpongeBob: Bring it on, your highness! Bring... it... on! Johnny: In this corner, defending a Poseidome, a small square guy. [Crowd cheers at SpongeBob] And his challenger! [Robo-Sandy appears] A huge murderous robot shaped like a squirrel. [Crowd boos at Robo-Sandy] Patrick: Look, it's a giraffe. SpongeBob: Uh, I think I need to get home, to feed Gary.
Crowd: (Screaming) [The score board falls] Patrick: I want to play! I want to play! SpongeBob: Patrick, We're not playing, we're fighting for our lives! Patrick: I want to play! I want to play! SpongeBob: D'oh, all right!
Patrick: Woohoo! That was fun! Your turn, SpongeBob! SpongeBob: Oh, uh, whee... (Gulps)
King Neptune: [Robo-Sandy is powers down and the crowd cheers] Well, That was quite a battle! Tell him what he's won, Johnny! Johnny: It's a new power, the Bubble Bowl! But, wait, here's more, a Golden Spatula and that's not all! A gift certificate for 5 dollars and 32 cents to Dean's Little Shop of Dried Fish Flakes and Flowers. SpongeBob: Oh, thank you, it all means so much! I...I... (sniffs and about to cry) I promised myself i wouldn't cry. King Neptune: Cry all you want. But not here, we just waxed the floors.
The battle takes place inside the Poseidome, a large stadium with a full audience that includes a large score board hanging over the arena. During the second phase after Robo-Sandy's head hits the score board too many times, it collapses and falls to its side, laying on one side of the arena up to the last stage.
Robo-Sandy will walk a few steps, before performing her basic attacks, such as an elbow slam, and a body slam in the center. She will become temporarily stunned, and lift the player into the air, encouraging them to use Bubble Bounce. Robo-Sandy's head will then depart from her body, and hit the score board, getting electrocuted. After two more hits, the score board collapses, transitioning into the second phase.
Once the score board collapses, Patrick insists SpongeBob into switching turns with him during the second round, in which he agrees to do so out of vexation. During this phase, Robo-Sandy will become mildly more aggressive by performing the 'Old Clothesline Move' with her attacks. When Robo-Sandy slams herself in the arena, the player can use Patrick's Body Slam move, removing her head. The player must pick up the head and toss it into the exposed wires of the damaged score board, causing the robot to become further electrocuted. Robo-Sandy's body will stretch out her arms in search of her head. If the player does nothing while she is decapitated, her head will fly back to her body.
Patrick switches with SpongeBob during the third round, much to his dismay. Robo-Sandy will perform moves in a much more excessive rate, and will use all her limbs to perform the 'Old Clothesline Move' on the player. When the player plops Robo-Sandy's head, it will still remain in her grasps, but will expose the button underneath as she temporarily sways it. The player must use Bubble Bash to hit the button, which will toss her head back to her body. After repeating this two more times, Robo-Sandy is subdued and falls to her defeat.
In the GBA Version, Robo-Sandy tries to stomp on SpongeBob somewhere not too far from Sandy's Treedome. The objective is to avoid contact Robo-Sandy during her leaps, and to stomp on the robot's head to crack the helmet. When the robot's health bar has been depleted by half, Robo-Sandy will utilize more attacks, such as using her hands to attack SpongeBob, and creating an electric field over her helmet to protect it from damage.
Karate Chop: Robo-Sandy will slam her elbow into the ground, creating a short shockwave of dust on the arena. SpongeBob or Patrick will get hurt if they come into contact with the wave.
"Old Clothesline Move": During the second phase, Robo-Sandy will slingshot herself across the arena, revealing springs that attach to her limbs that are flung towards Spongebob or Patrick. She will only use her legs during the second phase, and then her arms as well during the third.
Body Slam: Robo-Sandy will make a great leap and slam herself into the ground. She will be stunned temporarily, allowing SpongeBob or Patrick to use Bubble Bounce or Body Slam respectively, to plop her head-off.
Swipe: When SpongeBob or Patrick get too close, Robo-Sandy will perform a low karate chop towards them, causing damage.
Hopping: Robo-Sandy will hop across three levels of ground during the battle. If Robo-Sandy lands on SpongeBob he will be damaged.
Long Chop: When Robo-Sandy's life bar has been depleted by half, she will extend her left hand to hit SpongeBob, causing damage.
Static Helmet: Robo-Sandy's helmet will form an electric field to protect it from SpongeBob's attacks.
Unlike Robo-Patrick or SpongeBot SteelPants, Robo-Sandy seems to be mute, as she does not produce any verbal sounds during the battle, whereas Robo-Patrick screamed in his defeat, while SpongeBot can attack by screaming.