The Colossal Titan is one of the Nine Titans in Shingeki no Kyojin (Attack on Titan), known for its immense size and devastating transformation ability. It can release a massive burst of steam and explosive force when appearing, making it a fearsome weapon in battle and a major threat to humanity. In the story, it serves as a key mystery and a symbol of the Titans’ overwhelming power, playing a central role in the early conflict against the walls and later revelations about the world.