Borderlands 3 - A Guide to Red Chests and how to farm legendary loot - Millenium
Red Chest Locations - Borderlands 3 Guide - IGN
Borderlands 3 - A Guide to Red Chests and how to farm legendary loot - Millenium
All Portal Chest Locations in Borderlands 3 DLC; Guns, Love, and Tentacles » MentalMars
I didn't know this until today, but I found a red chest behind Ellie's sign near where you get your first car. I also got a level five face puncher from it.