Titan Class Overview The Titan class is one that specializes in armor. In fact, they are the most heavily armored of the three classes, and are known for their brute force. They are effective when attacking targets head on, taking advantage of their mastery of the Light to protect themselves and their comrades. Like all character classes in Destiny, the Titan has two subclasses: Striker which is the default, and Defender which is unlocked at level 15.