Rocky Wrench

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Rocky Wrenches are turtle enemies that resemble moles in behavior and appearance, though their design is closer to Monty Moles from New Super Mario Bros. Wii onwards. They pop out of manhole covers and attack foes by throwing their namesake wrenches. Rocky Wrenches work for Bowser's Koopa Troop, often appearing as crewmen on the organization's vehicles.

Super Mario Bros. 3
Rocky Wrenches first appear in Super Mario Bros. 3 as enemies on Airships, tanks, and ships belonging to the Koopa Troop. Upon sighting either Mario or Luigi, a Rocky Wrench will pop out of its hole on these vehicles and throw wrenches at them before descending back into its hole.

In most cases, a defeated Rocky Wrench will reappear, even when defeated by a stomp (it can be said they are stunned by being stomped). However, some Dark Land levels have red Rocky Wrenches which will be permanently defeated when attacked.

New Super Mario Bros. Wii
Although absent from Super Mario World, Rocky Wrenches reappear in New Super Mario Bros. Wii on the Airship of World 6. Their behavior is largely unchanged from their Super Mario Bros. 3 incarnation, though they can be frozen by Ice Mario. They are also defeated permanently when attacked. Rocky Wrenches have a nearly identical appearance to a Monty Mole with goggles, and no longer wear shells.

Super Mario 3D Land
Rocky Wrenches make a reappearance in Super Mario 3D Land. Though they are commonly found in Airship stages, they appear in several levels in the game. Their appearance is the same from New Super Mario Bros. Wii and conduct the same tactics of throwing wrenches as well, but some appear in pipes, some throw Bob-ombs, and some even throw Coins. Unlike other games, the wrenches they throw can be stomped on harmlessly, destroying them.

New Super Mario Bros. U
Rocky Wrenches appear in the Wii U title New Super Mario Bros. U with the same design and attacks as New Super Mario Bros. Wii. They only appear in Boarding the Airship of the Meringue Clouds, and are one of the few enemies that don't appear in New Super Luigi U.

The Adventures of Super Mario Bros. 3
On the television series The Adventures of Super Mario Bros. 3, Rocky Wrenches appear in several episodes, most commonly as the guards of Bowser and the Koopalings' Doom Ship, although they are also shown to work on tanks and the Doomsub as well. A Rocky Wrench, whose dialogue consists of nothing but menacing growling, has a somewhat prominent role in the episode "Up, Up, and a Koopa", where one is assigned by Bowser and Kooky von Koopa to guard the cage that Emperor Ed, and later Mario and Luigi, are held captive in. He is bribed a Fudjie by Mario to free them, but declines.

Nintendo Adventure Books
A Rocky Wrench competes in the International Mushroom Games as a member of a team called the Sneaks in Leaping Lizards. True to his team's name, he uses underhanded tactics in the events, cutting a hole in Roy Koopa's Magic Carpet during the obstacle course and throwing ink in his face during the Beetlebowl.

Mario Kart DS
In Mario Kart DS, Rocky Wrenches appear as obstacles on the Airship portion of the Airship Fortress. Popping out of their holes at random, these Rocky Wrenches can cause a kart to spin out of control if it runs into them. One mission involves Wario using a Star to defeat fifteen Rocky Wrenches.

Mario Kart 7
In Mario Kart 7, Rocky Wrenches appear on the retro course, DS Airship Fortress. They also appear in Battle Course 1. Here, they look like their New Super Mario Bros. Wii and Super Mario 3D Land appearance. They act like they did in Mario Kart DS, though they can be jumped on safely, and the player can even perform tricks off them.

Paper Mario: Sticker Star
Rocky Wrenches make their Paper Mario series debut in the Nintendo 3DS game Paper Mario: Sticker Star. They only appear on Bowser Jr.'s Flotilla. In battle, a Rocky Wrench will either hide inside their manholes or have their heads peeking from the manhole. If they are hiding inside the manhole, they cannot be attacked and Mario's attacks will miss. Rocky Wrenches, just like in previous games, throw their wrenches to attack. They also have bigger wrenches which deals more damage to Mario, and mostly use this attack when they are attacked. Sometimes after battle, a Rocky Wrench may drop a Wrench sticker.

Mario Golf: World Tour
In Mario Golf: World Tour, Rocky Wrench is one of the names that can appear on the tournament scoreboard.

Super Mario Maker
Rocky Wrenches reappear in Super Mario Maker, using same appearance and behaviors from Super Mario Bros. 3. They also made new sprites for Super Mario Bros. and Super Mario World styles, since Rocky Wrenches absent in original Super Mario Bros and Super Mario World games. They also redesigned Super Mario Bros. 3's sprite.

They regain their shells in SMB, SMB3, and SMW style, but still lack them in NSMBU style.

Trivia

 * A Sammer Guy by the name of Spanner of Rock appears in Super Paper Mario; his name and speeches including references to Rocky Wrenches.
 * In official artwork for an airship in Super Mario Bros. 3, Roy Koopa hides in a trench and throws wrenches very similar to Rocky Wrenches.