Grimmerstone

Grimmerstone is a Ghoul Slug created by using Dark Water on a Rammerstone. At 100 mph, they turn a black, blue tinted color with red bellies, and white fists and horns. They also are twice the size of normal rammers, and twice as powerful. A Grimmerstone is also more muscular than normal rammers.

Moves
Grimhorn - Hard projectiles with sharp horns

Slammerstone - Does a massive uppercut with its huge rocky fists.

Hailstone - Shoots sharp rock fragments from it's fists.

Castlerock - Hits the ground hard, causing sharp rocks to shoot up and form a large, spiky wall.

Rockstorm - Hits the ground and slams rocks up, causing an avalanche of sharp stones.

Appearances
In The Beginning, Locke uses a Grimmerstone to force two Hop Jacks at Eli Shane, but it is defeated by Joules and cured by Doc. Dr. Blakk later launches one at Eli which he dodges, and it is brought onto the Hundred Acre Wood island with the Shane Gang, Spider-Man and the students and cured by Doc.