I feel like all my favorite characters would be insufferable, mostly because the ones in ships would all bring their SOs and I have no interest in third-wheeling any of them.

I really liked Murder on the Orient Express, for train novels...

eta someone said Wen Ning's name on Mastodon (maybe related to this??? I'm too blotto to read carefully) and I've changed my vote to Wen Ning. (eta 2: yes it was in relation to this, and yes it was ehyde.)