Dark Mechawful is an enemy in Mario & Luigi: Bowser's Inside Story that is a blue, robotic Fawful most likely invented by Fawful himself. They can be encountered in Peach's Castle. They are similar to normal Mechawfuls in appearance, but are blue instead of green, have a wheel rather than legs, and are only encountered by Bowser.
In battle, Dark Mechawfuls attack Bowser by coming up to him and starting a short countdown. When the number hits zero, the Dark Mechawful will attempt to punch Bowser. This can be avoided by hitting the X button right before the countdown hits zero to punch the robot and counterattack it as it lunges forward to hit Bowser. Another attack is when the Dark Mechawful shoots a giant, purple laser at Bowser. The player must hit Y to make Bowser duck and avoid it. The player will then have to make Bowser punch the robot with X before it smashes Bowser.
After taking a certain amount of damage, the head of the Dark Mechawful will fly to the top screen. If there are no other surviving Dark Mechawfuls in the battle, the head will fly away and the player will win the battle. But if another Dark Mechawful is in battle it will stay at the top screen where Bowser can inhale it. If Bowser does not inhale the head, it might summon another body, turning it into the Dark Mechawful.5. This body will have an iron grey cloak that makes it even more similar to the real Dark Fawful and boosts its defence, but a more important difference is that this Dark MechaFawful's timer will go haywire when it hits the 2 second mark, making its attacks much more frustrating to counter and giving full incentive for Bowser to inhale the head before it gets that chance.
In Bowser's body, the head has two attacks. One attack involves the head flying over a Mario Bro. and trying to dive-bomb it, exactly like what the normal MechaFawfuls do, the Bros. need to counter this with their hammers. A second attack begins with the Dark Mechafawful using a harmless red laser in varying patterns: this will soon be followed by a damaging array of stars that the Bros. must jump over. The stars follow the same pattern as the red laser, a fact which is useful in avoiding the attack.
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