# ROBO-ONE

- Canonical: https://robot-fighting-championship.com/leagues/robo-one
- Record family: leagues
- Stable ID: robo-one
- Data snapshot: 2026-08-02T00:00:00Z
- Data source: fixture

## Direct answer

ROBO-ONE is Japan’s long-running small humanoid combat competition. It is historically central to the category but physically distinct from today’s full-size humanoid leagues.

## Classification

- **Record status**: Active long-running competition
- **Entity kind**: sports-league
- **Field role**: core
- **Competition class**: Small humanoid combat competition with mixed classes
- **Control mode**: Mixed manual + autonomous
- **Hardware field**: Open / class-defined field

## History

ROBO-ONE began in 2002 and has sustained recurring numbered competitions, including autonomous and class-specific formats.

## Format

The official basic rules use three downs, a ten-second stand-up count, one timeout per team after a slip, two-down aerial throws and sudden death on a tie.

## Broadcast

The official event archive publishes numbered competitions, schedules and results. The 45th event is scheduled for 26–27 September 2026.

## Verification boundary

History, basic rules and 45th-event schedule are official-source backed. Project H still needs a structured participant roster and per-bout archive.

## Rules status

**Official basic rules available.** ROBO-ONE publishes an English basic-rules page and event-specific rule documents.

- **Win condition**: 3 downs — Basic rule
- **Recovery**: 10 seconds — Robot must stand
- **Large aerial throw**: 2 downs — Owaza
- **Tie**: Sudden death — Official basic rules

## Evidence claims

No published records.

## Events

No published records.

## Fights

No published records.

## Robots

No published records.

## Teams

No published records.

## People

No published records.

## Rules

No published records.

## Relationships

- org:robo-one-org operates league:robo-one — confidence high
- event:robo-one-45 edition_of league:robo-one — confidence high

## Media

- logo: ROBO-ONE official wordmark; source https://www.robo-one.com/; credit Biped Robot Association / ROBO-ONE; rights prototype-only

## Primary sources

- [Official site — ROBO-ONE](https://www.robo-one.com/en/): Competition archive and current event surface.
- [Basic rules — ROBO-ONE](https://www.robo-one.com/en/abouts/view/rule/): Official English rules summary.
- [45th ROBO-ONE — ROBO-ONE](https://www.robo-one.com/en/roboones/index/93): Official September 2026 event page.

## Citation boundary

Use the canonical HTML page for visible evidence state, context, corrections and source relationships. This Markdown representation is generated from the same published Project H record and contains no draft or private fields.