The Shel-drone is a drone that explores Alterna for any hidden treasures and then delivers them the next day to the lobby terminal.
The Shel-drone is a drone in the shape of Sheldon's head carrying a box. Although only named in Splatoon 3's Return of the Mammalians, this is likely the same drone as used in Splatoon 2's Octo Canyon, as they look identical.
Return of the Mammalians
The Shel-drone is stationed on the launchpad next to the Squid Sisters Camp in Future Utopia Island. It becomes available after completing the campaign and exploring 100% of Alterna, but clearing all levels is not required. Once unlocked, it can be enabled once a day for 999 Power Eggs, and will spend the rest of the day searching Alterna for treasure. Once the next day starts, it will deposit the treasure at the Lobby Terminal, and return to the launchpad where it can be activated again.
After the Shel-Drone has been activated and the day has passed, the player can go to the lobby terminal and select "Get stuff", which will give the player one of the following: 
|1 Locker Decoration||70%|
|1 Food Ticket||10%|
|5 Random Ability Chunks||10%|
Receiving decorations from the Shel-drone is the only known way to currently receive duplicates of the Return of the Mammalians-exclusive decorations.
When using the timer in Photo Mode, the Shel-drone will appear hovering in place while holding a camera underneath, acting as a visual indicator of where the photo is being taken from.
- Photo Mode's timer cannot be used in Alterna, likely due to the Shel-drone being located at the Squid Sisters Camp in Future Utopia Island.
Marie introducing the Shel-drone.
Text received after retrieving items at the Lobby Terminal.
Names in other languages
The section or page is missing non-English translations or material from other localizations edit
|Dutch||Armadrone||From Armada ("Ammo Knights") and drone|
- ↑  Video proof that you can access Shel-drone even with unplayed kettles
- ↑  https://leanny.github.io/splat3/mission.html