Stone walls are characters that withstand more than they can actually deal and is the opposite of the Glass Cannon. They have vastly more Durability than Attack Potency or Striking Strength. This are denominated stone walls and are also called by other nicknames, such as tanks, meat shields, etc. Usually appear in games, when characters have way more defense than damage they can deal in their stats. This characters are somewhat rare, because when feats like this appear, they are usually denominated as outliers or inconsistencies.

For example, a character may struggle against a professional athlete in terms of attacking him, but can withstand a ramming of a car. This is an example of a stone wall.