Bomp

Pushy Walls are the three protruding stones on Whomp's Fortress in Super Mario 64. At the beginning of the level, they go through a pattern of pushing, trying to shove Mario off of the cliff, and to his death.

The beginning and end stone are thinner than the center stone. The eyes have a blue outline with blue pupils. However, in Super Mario 64 DS, no detail is on the rock.