The most powerful warrior.

I'll repeat myself: A Titan cannot be the most powerful warrior because it's a ranged unit, and as is known, if monsters are of the same rank, then the strongest are melee units, followed by flying units, and then ranged units. (Of course, there are exceptions, and the Titan is indeed strong, but its advantage is efficiency. In a one-on-one fight, it will lose to most 7th-level monsters.