Colossus Titan

The Chō ōgata Kyojin (超大型巨人) is one of the Nine Titans noted for its incredible size and significant control over the steam emitted by the Titan form. It is currently in the possession of Armin Arlert.

Steam emission
The unique ability possessed by the Colossus Titan appears to be significant control over the amounts of steam emitted by the Titan form. In normal circumstances, Titans emit steam from wounds, and their bodies evaporate completely into steam after receiving a killing blow. The Colossus Titan is capable of emitting great amounts of steam at will. This power can be used for a variety of purposes. By emitting great amounts of steam at once, the pressure and force of the steam will burn and repel any individuals in close proximity to the Colossus Titan that are not fixed in place.

However, prolonged use of this ability takes a toll on the Titan, decreasing muscle mass gradually until only the skeletal structure remains. In some cases when it is necessary, the Colossus Titan is capable of evaporating its entire body at once, disappearing instantly. This puts the user in a position of great vulnerability, with no way of preventing a fall from a great height where the Titan form once was. However, this disadvantage can be alleviated if the user is wearing vertical maneuvering equipment.

Bertolt Hoover
Bertolt Hoover's Colossus Titan was infamous for its incredible size, standing at a previously unseen, high enough to peer over the top of the Walls. Despite the "Colossus Titan" name being used by both Eldia and Marley in reference to Bertolt's Titan, it cannot be said for certain whether the size of Bertolt's Colossus Titan was a trait possessed by all inheritors of his Titan or if it was exclusive to his own form. The mindless Titans which form the foundations of the Walls also possess incredible height and a lack of skin similar to Bertolt's Titan despite the former not possessing the power of the Titans.