Bumble C, Tesla's exposed mechanical Optimus development robot, standing onstage

Tesla AI Day · 2022

BUMBLE C

The first ever Optimus robot.

Discover the first step
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The machine before the future

Before Optimus had a face, it had the courage to take a step.

Built fast, exposed on purpose and powered by the same computer lineage as Tesla vehicles, Bumble C walked onto the AI Day stage without a tether and turned an idea into a machine.

Bumble C taking a step across a dark, cyan-lit technology stage

September 30, 2022

No tether.
No backup.
Just the first step.

A rough development robot using semi-off-the-shelf actuators became the first physical chapter of Optimus.

01Genesis prototype
1,431Days since the first walk
FSDComputer lineage
What one step unlocked
Bumble C exposed prototype detail
01
FIRSTuntethered stage walk

The Bumble C story

Four moments.
One beginning.

The first step

On September 30, 2022, Bumble C walked onto the AI Day stage with no crane, cable or backup support. Tesla said it was the robot’s first untethered run.

A shared foundation

“Everything we’ve developed for our cars … actually applies to a humanoid robot.”
Elon Musk · We, Robot

A robot in plain sight

Nothing hidden.
Everything becoming.

Close view of Bumble C's black faceplate and exposed upper body
01 · Vision

A black glass face looking into a new world.

02 · Motion

Balance transformed from software into movement.

Every joint made the invisible work of control physical.

03 · Purposeunsafe
repetitive
boring

The work a general-purpose humanoid was created to take on.

Holder signal

Quietly pairing history with what comes next.

Rewards moduleVERIFYINGHolder benefits activate only when distribution mechanics are verified.
Bumble C crossing a moonlike surface beneath Earth

From one stage to every frontier

The first step was only the beginning.

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