Relief (レリーフ Rerifu?), is an obstacle, that is stone statue of human face with red gem on its forehead, placed on the wall. When it sees the player, it will start shoot arrows toward him. Relief has made appearance at Marble Garden Zone in Sonic the Hedgehog 3 and years later made another appearance at Sylvania Castle Zone in Sonic The Hedgehog 4: Episode II.
Relief is found carved into a wall from both ruined temples or outside as well, while remaining motionless. When the player comes into its range, it periodically fires arrows from its mouth in a straight line. Hitting the red gem on its forehead three times will deactivate the Relief and open a wall or floor nearby, that leads to the route to progress in the game. While playing as Knuckles in locked on version of the game, who cannot climb on Reliefs, there is one part of Marble Garden Zone Act 2, where Knuckles is unable to reach and destroy the Relief, as the player has to use alternative pathway, that is located upper part of the zone.
In Sonic the Hedgehog 4: Episode II, Relief shoots darts at the player as it did before. It is invincible however, as hitting its gem will not destroy it. Reliefs also appear in underwater segments, though these Reliefs blow the player away rather than firing arrows.