Mother of Grogans - Borderlands 3 Farming Guides
Location: The Anvil on Eden 6
Part of: Rare Spawn
Drops: Creeping Death (Tediore Shotgun) and Hornet (Dahl Pistol)
Mother of Grogans is a rare spawn in Borderlands 3 that you can find in The Anvil on Eden 6. She can be found in the northern most tunnel that breaks off from the main path leading north through the zone. It's fairly close to the zone's entrance (as the map above shows) which makes the run easier. If you plan to farm this boss there is a save terminal/respawn terminal just outside of her room.
As far as loot goes, Creeping Death (Tediore Shotgun) and Hornet (Dahl Pistol) are on her dedicated drops list with the Creeping Death being unique to Mother of Grogans. It's possible to find it elsewhere in the world, and I have, but it drops much more commonly from her.