Our Borderlands 3 Rick and Morty Gun Guide features the exact location of where you need to go in game to find this Easter Egg! This little side excursion in the game has you taking on Wick and Warty, who will hopefully drop for you a legendary weapon called the Phebert.
Rick and Morty Easter Egg Location
You can find Wick and Warty over in Lectra City on Promethea. This is the setting for the big Kill Killavolt side-mission that has you running around the area in a battle royale like setting and killing various enemies. This leads you to an eventual battle with Killavolt himself. Thankfully, if you want to skip all of that, you can go to the following location and find the Easter Egg location.
As you can see, you'll start to the west of where you need to go at the Lectra City Fast Travel Station. You'll want to hug the right side boundary to make your way over to Wick and Warty. This isn't a guaranteed spawn, but it's pretty often as far as I can tell. If it's your first time over here, make sure to go trigger the save point that's located on the map above to make the return trip quicker.
If you don't encounter Wick & Warty or you do and Wick doesn't drop the loot you are looking to obtain then you can just head back to the main menu and re-enter the game. You will spawn where that save point is and you can easily run back and try again.
Wick & Warty
This fight can be a bit difficult if you're at the same level as Wick. She will teleport around using Rick's signature green portal to move around the area. There are multiple Wartys you'll need to dispatch who are obviously less formidable than Wick.
This area can kind of be swarming with robots, so you might want to take those out before you engage with Wick.
If you kill Wick enough, you should eventually land yourself the Phebert legendary.
It packs quite a bit of damage and you can get in close to enemies and ADS due to the Hyperion shield it comes with. It also fires very fast, however, the negative is that it takes 2 ammo per shot so you will need to reload often. The reload time is pretty slow, so I would only recommend this weapon to a class that is consistently refreshing their magazine with talents.