User blog comment:God of nothing/Titan shifters-Invincible?/@comment-17563801-20131001222038/@comment-17563801-20131002001552

i thought about that too, and i agree with you. i think that the class of the titan depends on the age of the host, so if the host was infected (i say infected because i think its a virus that turned all those people into titans) when he was a child his titan would have to be a 3m class. the bigger the host is and the older he is the bigger his titan is.