[He has to consider this for a moment, to make sure that his answer is truly objective and not too entirely biased. As much as he likes Zelman and would like to say that he was the most powerful... frankly, he wasn't.]

Riful was very powerful when I encountered her larger form... But likewise, she was very stupid about the situation, and intent on nearly driving herself into the grave. I have a difficult time considering someone like that powerful.

Allen is powerful as well; and his determination plays a large factor into his strength.

...and of course, there is also you.