The Night of a Thousand Tears

There's a concept of the bad Mando. Who are these Mandos? Could they be part of both Catan's old crew, Axe wolves and Sasha Banks or Imperial Mandos? Do they still exist? I mean, maybe there are some Imperial Mandos still within what's left of the Empire. Um, but I began to think, um, about the campaign he led to completely wipe out the planet Mandalore, right? Was that an inside job? That's what I'm wondering because was it there's something about accessibility onto the planet MandalORE? Didn't they have a shield or something you had to get through or they had something, didn't it? I seem to