Bastiodon — every printing, every price, every gap.

Any frontal attack is repulsed. It is a docile Pokémon that feeds on grass and berries. When attacked, they form a wall with their shieldlike faces to protect their young. When they lined up side by side, no foe could break through. They shielded their young in that way. When attacked, they form a wall. Their rock-hard faces serve to protect them from the attacks. While it can guard against any sort of attack from the front, it is left without recourse when attacked from behind.