An Orc who was subjected to a plethora of experimentations and enhancements under the watch of a secretive sect of Baldur’s scientists aiming to push the physical limits of a mortal’s body. Muscles, designated Project Glass Ceiling EX03A, was the first humanoid to undergo these tests after decades of fruitless work on beasts who entered dangerous states of enragement before being euthanised. Muscles showed more promise, and though he entered a chemical rage whenever the liquid was filtered into his bloodstream, it showed a hint of intelligence, directing the rage at the experimenters and handlers, rather than any bystanding beasts or inanimate objects in his pen. He was broken free by Brains during his own escape, and the two have been inseparable since.