Gotta Blast! Maker Builds a Real-Life, Working Jimmy Neutron Goddard Robot

Fancy robot dogs like Boston Dynamics’ Spot have got nothing on Goddard. Not only can Goddard transform into dozens of vehicles and gadgets, but he’s also the best friend anyone could ask for. No other machine even comes close. But on second thought, Spot does have one advantage over Goddard — it’s real. Goddard only exists in the imaginary world of Jimmy Neutron.

Or at least that was the case until Kiara of Kiara's Workshop made Goddard real. She has just completed the build of a life-sized replica of Goddard. It may not be able to transform like the cartoon version, but it does make for a good companion bot.

Since Goddard’s transparent dome houses a glowing plasma brain in the cartoon, Kiara centered the entire design around a commercially available plasma ball. A low-poly model of Goddard from an old GameCube game served as the starting point for the digital design, but extensive modifications were required to create realistic curves, internal mounting points, and structural reinforcement capable of supporting motors and moving components.

To replicate the robot’s characteristic accordion-like legs, Kiara installed four linear actuators inside the body, each connected to custom leg assemblies. Flexible corrugated sleeves were 3D printed from TPU filament because no commercially available tubing matched the required size and appearance. The resulting mechanism allows Goddard to smoothly transition between standing and sitting positions while maintaining the character’s distinctive proportions.

Supporting the weight of the oversized head with Goddard’s thin neck while providing expressive movement required a cable-driven animatronic system similar to those used in movie creature effects (before CGI, anyway). Steel cables routed through PVC guides connect the head to high-torque servos hidden within the body. By carefully controlling cable tension, the robot can pan, tilt, and look around with lifelike motion.

Kiara also developed a clever solution for the robot’s animated jaw. Rather than forcing a servo to continuously hold the mouth closed, tension springs naturally return the jaw to its resting position. A servo only needs to pull a fishing line linkage to open the mouth, reducing strain on the electronics while creating smooth chomping motions.

To complete the illusion, the robot received an extensive finishing treatment. The 3D-printed ABS shell was sanded, primed, coated in gloss black, and then sprayed with a highly reflective chrome paint to achieve Goddard’s signature metallic appearance. Matte yellow accents and glowing LED eyes completed the look.

After hours of assembly and wiring, the finished robot successfully recreates many of Goddard’s classic behaviors, including sitting, standing, turning its head, and opening its mouth. While it may not transform into a rocket ship or a submarine just yet, this real-world Goddard is about as close as fans have ever come to bringing Jimmy Neutron’s robotic dog to life.