Crawly Family is a ‘Legendary Hunt’ in Borderlands 3. The fight starts with Lavender Crawly, a badass Varkid, but when you defeat it, Lavender will hide in his cocoon and transforms into Bobby and Kira Crawly. When you kill these 2 they will do the same as Lavender. Bobby Crawly will transform into Martha and Matty Crawly. And Kira Crawly will transform into Cybil and Edie Crawly.
The Crawly Family is located in The Droughts on the planet Pandora. When you fast-travel to this map, grab a vehicle and make your way to the Varkid Walley area on the left.
You can farm Crawly Family for these legendary weapons as it is the dedicated loot source for these items. Crawly Family has a 7.5% legendary drop chance each.