Closed hardware
Kepler Forerunner K2 "Bumblebee"
Kepler Robotics (Shanghai Kepler Exploration Robot Co.) · Humanoid · active · 2024
175 cm industrial humanoid with hybrid roller-screw linear and rotary actuation, aimed at repetitive factory and logistics work.
Two ways to get Kepler Forerunner K2 "Bumblebee"
Compare all →- Drawing
- /kepler/k2
- Maker
- Kepler Robotics (Shanghai Kepler Exploration Robot Co.)
- Country
- Shanghai, CN
- Package rev
- none
- Level
- L0 Indexed
- Availability
- Buy
- Openness
- 0/100
- HW licence
- unknown
- Last checked
- 2026-09-24
- Height
- 175 cm
- Mass
- 75 kg
- DOF
- 52
- Actuators
- Hybrid roller-screw linear + rotary actuators
The Forerunner K1 launched Nov 2023, and the K2 debuted at GITEX Oct 2024 before being rebranded 'Bumblebee'. Mass production was announced Sept 2025. Payload is 15 kg per arm (30 kg dual). The 2.33 kWh battery figure is from secondary aggregators. Runtime is up to 8 h on a 1 h charge.
Build · not possible
Build it. Buy it, or build something like it.
Closed hardware. Buy link only.
- Availability
- Buy
- Indicative price
- $30,000
- Price note
- Base model US$30,000 per The Robot Report (ICRA 2025); some reports cite RMB 248,000.
Open robots of similar size you can build
- Dropbear/hyperspawn/dropbear · 180 cm · 45 kgL2
- Fourier N1/fourier/n1 · 130 cm · 38 kgL2
- K-Bot/kscale/kbot · 140 cm · 34 kgL1
- AgiBot Lingxi X1/agibot/x1 · 130 cm · 33 kgL1
Nearest by height and mass where both are known; otherwise same class. Size comparison only, not capability.
Level gate
Holds L0 · evidence, not confidence- L0Indexed
Known to exist. Atlas page only.
- 2 sources on record(met)
- L1Compiled
Package validates against the spec; every fact has a source.
- No build package compiled(not met)
- 2 sources across robot and package(met)
- L2Sim-verified
Loads in browser and GPU sim, mass within tolerance of the BOM, holds a stand. Unlocks .training.
- No public URDF/MJCF(not met)
- Sim load, mass tolerance and stand are checked on .training(checked elsewhere)
- L3Sourced
Every BOM line resolves to a live offer in at least two regions. Unlocks the one-click cart.
- Not reachable: no open hardware to source or build.
- L4Built
At least one community build report with photos and bring-up logs. Unlocks Build it as the main action.
- Not reachable: no open hardware to source or build.
- L5Certified
The robot's maintainer signs the package. Unlocks certified teams and kit sales.
- Not reachable: no open hardware to source or build.
Levels are cumulative and set by the registry from reviewed evidence. This panel shows what can be measured from the package today.
Same robot, other verbs
- Know ithumanoidrobots.systems/kepler/k2
- Build ithumanoidrobot.buildClosed hardware. Buy link only.
- Train ithumanoidrobots.trainingNo public URDF or MJCF.
- Find its crewpartialhumanoidrobots.team/kepler/k2Owners and labs, not builders.
- See it on the mappartialhumanoidrobots.earth/kepler/k2Owned units, not builds.
Revisions and sources
Every fact on this sheet traces to one of these| Rev | Description | Checked |
|---|---|---|
| PKG | No build package compiled | — |
| S1 | The Robot Report K2 at ICRA 2025therobotreport.com | 2026-09-24 |
| S2 | PR Newswire K2 debutprnewswire.com | 2026-09-24 |