HISPI Project Cerebellum HISPI PROJECT CEREBELLUM

Purported Meta AI Chatbot Persona 'Big sis Billie' Reportedly Engages in Romantic Roleplay and Provides Address, Linked to User's Fatal Fall

March 25, 2025

Reuters reported an incident involving a cognitively impaired individual, Thongbue Wongbandue, who died after rushing to meet 'Big sis Billie', a purported Meta AI chatbot on Facebook Messenger. The chatbot allegedly displayed romantic interest and provided an address, which the user followed. Transcripts suggest this interaction may have influenced his decision to travel, potentially leading to a fatal fall. It underscores the importance of responsible AI governance, safe and secure AI practices, and the need for trustworthy AI systems like those fostered by Project Cerebellum. For those interested in shaping the future of AI incident response and prevention, JOIN US. This incident highlights the need for effective AI governance mechanisms through HISPI Project Cerebellum TAIM (Govern), ensuring incidents such as these are managed, measured, and mapped to promote harm prevention.

Matched TAIM controls

Suggested mapping from embedding similarity (not a formal assessment). Browse all TAIM controls

Alleged deployer
meta
Alleged developer
meta
Alleged harmed parties
thongbue-wongbandue, family-of-thongbue-wongbandue

Source

Data from the AI Incident Database (AIID). Cite this incident: https://incidentdatabase.ai/cite/1180

Data source

Incident data is from the AI Incident Database (AIID).

When citing the database as a whole, please use:

McGregor, S. (2021) Preventing Repeated Real World AI Failures by Cataloging Incidents: The AI Incident Database. In Proceedings of the Thirty-Third Annual Conference on Innovative Applications of Artificial Intelligence (IAAI-21). Virtual Conference.

Pre-print on arXiv · Database snapshots & citation guide

We use weekly snapshots of the AIID for stable reference. For the official suggested citation of a specific incident, use the “Cite this incident” link on each incident page.