Ace aka ♠

Ace silently works the triple job of orderly, janitor, and security guard at the Metal Glen facility. When the cure caused everybody to go violently insane and keep reviving over and over, Ace was tasked with keeping the facility in order. Except that he stopped listening to the Metal Glen. He started listening to the Barbed Wheel, the one responsible for the madness caused by the cure to death which Ace also succumbs to.

Ace is a force only able to be slowed rather than stopped by the patients and staff. His habit of solely walking makes escape deceptively simple, but he always finds who he's looking for eventually. And he cannot be stopped.

Feats marked in italics are non-canon but are likely able to be replicated by canon Ace.

Strength:

• Easily restrains Ruby after she hooked Red.
• Responsible for Tom's eye being removed off-screen.
• Gets through rubble Tom was unable to clear, although Ace only does this off-screen.
• Tears open a hatch which decapitated Stitches and Tom was unable to pry open at all.
• Rips a spear that impaled him out of the machine it came from.
• Easily breaks out of a locker that Tom couldn't open.
• Breaks open a steel door off-screen.
• Throws a barrel hard enough to squash a monster.

Durability:

• Tanks a bomb that destroys multiple rooms, although it's uncertain how much of this is Ace's physicality or regeneration.
• Doesn't care whatsoever about being impaled in the knee by a crowbar.
• Impaled by a spear that WoG says would have killed Tom and recovers quickly, shows up later with no wound.

Speed:

• Fast enough for Tom to say he'd catch up to himself and Ruby in seconds when Ace is a floor or two below them.
• Dives before Ruby to shield her before she can react.

Other:

• Owns a harpoon.
• Also owns an electric cattle prod.
• His face is made up of worms.
• Tom (the racoon) is scared of Ace even while deeply mutated, which makes Tom (the cat) even more horrified of Ace.