Ripper

A Ripper is a type of enemy in the Banjo-Kazooie franchise. They are gray mobile tombstones with bulbous eyes. Their names are most likely derived from the phrase "R.I.P." (a short abbreviation for "rest in peace").

Banjo-Kazooie
Rippers are mildly common enemies native to Mad Monster Mansion, but a few can also be found at the entrance to said world at Gruntilda's Lair after Mad Monster Mansion is first visited. Rippers camouflage themselves, posing among the other normal gravestones while sitting perfectly still, waiting for Banjo and Kazooie to draw near before popping up to attack them in ambush. They can be told apart from regular tombstones due to fading away from draw distance, as the regular tombstones are part of the level geometry.

Being made of stone, Rippers are very durable, taking multiple hits to defeat. However, if attacked from the back with the Rat-a-tat Rap ability, they can be defeated in just a single hit.

Due to the regular tombstones being larger in Grunty's Lair than in Mad Monster Mansion, the Rippers are also much larger in the former world than the latter.

Banjo-Kazooie: Nuts & Bolts
Simplistic, rudimentary replicas of Rippers appear as decorations in Banjoland. Several appear on display in a makeshift graveyard in front to Mad Monster exhibit.

They are bolted down to the ground; however, Kazooie can take control of their arms by using Mumbo's Wrench and spin them around.