Describe a character, give it animated moves, and let Twitch chat send it into a fighting tournament. That is the loop behind ODDBOUT Twitch Cup, a project built for the Codex x TwitchCon Hackathon.
An AI agent helps create and register the fighters. Chat chooses who enters. Once the host starts the cup, two semifinals and a final play automatically. The demo connects character creation with an actual Twitch broadcast.
Watch the ODDBOUT Twitch Cup demo on YouTube. The hackathon asks developers to use OpenAI Codex to build experiences for Twitch streamers and their communities. That includes audience participation, streamer collaboration, and tools that enhance what happens on stream.
The event offers $25,000 in prizes. Its top five projects are scheduled to appear at the Codex booth at TwitchCon San Diego on November 15, where winners will be announced. ODDBOUT Twitch Cup is one of the projects built for the event.
The starting point is a plain-language request in Codex. In the demo, the Dots agent receives a request to make an isekai girl group and register the characters on ODDBOUT.
According to the project description, Dots creates the appearance and motion animations, with review steps for the creator. The finished fighter then goes through ODDBOUT's checks and registration before entering competition.
The result goes beyond a portrait. Walking, attacks, hit reactions, and falls become part of a fighter that can appear in the arena.
The broadcaster opens the Twitch Cup page, connects Twitch, and captures the page in OBS. Viewers enter a command such as !join velora in chat.
In normal live mode, four different viewers claim four different fighters. The host presses Start cup, and the two semifinals and final run through to a champion.
The published demo is a solo rehearsal: one broadcaster account entered all four join commands. It shows the broadcast flow rather than a crowd of independent viewers. Match outcomes come from the ODDBOUT fight engine.
The interesting part is the connection between character creation and a live tournament. The human host still reviews the character, connects Twitch, handles OBS streaming, and starts the cup.
The video also compresses the process into roughly three minutes, speeding up longer steps. It should not be read as a promise that a finished fighter is generated instantly or that AI operates the entire broadcast without a host.
The hosted page includes Try without Twitch. Select it, choose Fill all 4 slots, then Start cup to try the tournament without connecting a Twitch account.
The public repository contains the standalone Twitch Cup client. The character-creation agent, MCP server, and plugin belong to the wider project and are separate from that repository.
ODDBOUT Twitch Cup links two kinds of participation: imagining a character and cheering for it. That makes live streaming an interesting next destination for AI-created characters.