Apparently when I first absorbed Cody my mind couldn't handle it at such a young age. So as a defense it started creating barriers around anyone I absorbed. Blocking everyone off to make my head a lil less heavy. Stunted the development of my powers. Got to the point where I had so many interlocking blocks that telepaths couldn't really get a good reading on me because of the chaos.
Then they were wiped clean. Sort of. Then the Professor went in and got rid of the last remaining one, letting me finally develop to where I am now. Still learning what all I can do really.