Fly Guy R thieves

"Where is Master Bowser's birthmark? And WHAT SHAPE IS IT?"

- Fly Guy R Thieves

The Fly Guy R Thieves (also known as Fly Guy Rs) are a group of Fly Guy Rs found in Mario & Luigi: Dream Team. They are fought as a mini boss during Mario and Luigi's hunt for the Ultibed parts, specifically the Driftwood Jellyfish Sheets.

History
When Mario and Luigi enter the hidden cave on Driftwood Shore to find the Jellyfish Sheets, the Fly Guy R Thieves are heard talking about how they plan to steal the treasure from inside. When Mario and Luigi actually reach the Jellyfish Sheets in the cave, the thieves appear and steal them, running away and knocking over the Mole Game Shelltop nearby in the process.

They're found at Pi'illo Blimport, where the party come up with a plan to distract them and get back the sheets. Prince Dreambert and Starlow loudly talk about a "rumour" involving Bowser, while Mario and Luigi creep around and steal the sheets back from behind the thieves' backs. However, the Fly Guy R Thieves notice the Bros. when they get the Jellyfish Sheets, attacking them. Once they're defeated, they do not appear for the remainder of the adventure.

Battle
In battle, the Fly Guy R Thieves fight identically to the other Fly Guy Rs, summoning Goomba Rs to attack or dropping them on Mario or Luigi to cause damage. They do have the boss theme playing in their battle though, as well as the special boss intro beforehand.

Trivia

 * The Fly Guy R Thieves are the only boss in the game that happen to be identical in both abilities and appearance to other common enemies.