A Boss Battle where the boss remains in one place. It might be because the boss is too big to move and be a fair fight or because it's merged with something and can't move. Most often overlaps with Puzzle Boss or Background Boss. If the boss is edging ever closer and you must defeat him in a time limit he may also be an Advancing Wall of Doom. In older games, large bosses were largely stationary due to sprite limit count (and having to use background tiles as an alternative) and difficulty to animate background tiles. Compare Pivotal Boss. Contrast Get Back Here Boss.