Rock hand is a giant hand made completely out of rock, as its name implies. Its appearance can be compared to that of Wham Bam Rock's hand.
Rock hand appears several times in Stage 8 of Volcano Valley. It cannot physically hurt the Kirbys, but it tries to move a spiked wall in that stage and, more notably, knock down the Skull Tower the Kirbys have to climb. To defeat it, the Kirbys have to jump into it many times before the rock hand succeeds in KOing them.