One Piece, Many Muscles (Patreon)

Normally the lab doesn't intervene when someone has a growth scenario that doesn't involve us - we just watch, enjoy, and give thanks that we weren't the ones that had to do all that research and development.

However, whatever agent is causing Nico Robin's expansion wouldn't have passed our psychological effects filter, and there's a strong possibility this will escalate into an act of violence.

And we abhorr violence.

After all, if Nami doesn't survive, that's one less lady for the lab to pump up! Priorities people!