The Power Muscler is a large heavy-duty comic book inspired enemy from Mega Man 5 that is featured in Mega Man Maker. Power Musclers are very similar in functionality to the Big Eye enemy type, with them standing in place initially, then preforming a high long jump to try and collide with or land on the player character. If a Power Msucler hits a wall while trying to jump it will bounce off it and fly in the opposite direction. Power Musclers can usually be evaded by sliding or dashing under them, however doing so in a small room is risky, as Power Musclers also have upward facing thrusters on their backs that will activate if the Player character is under them to make the Power Muscler cancel it's jump and slam down extra fast.
- Wily designed the Power Muscler to resemble a comic book he read during his childhood. This comic is believed to be Tetsujin #28 (Iron Man #28) (or Gigantor as it was called in America) as the main character looks very similar to Power Muscler except grey and with a slightly different face. The face on Power Muscler instead resembles Guts Man.
- In Mega Man 5 and Mega Man Maker Power Muslcers come in two colors, red and green. In Mega Man On Gamegear however, the Power Musclers in Napalm Man's stage had an all new Purple and yellow color scheme.
- If a power Muscler uses it's jets to slam down and it lands on a spring, it will be launched up at an excessive speed, causing it to disappear into the sky if there is no ceiling above it.
- However, if Time Slow is active and a Power Muscler slams down on a spring it will not be launched that extra height and will instead bounce like normal.