I like where you're going with that actually...If not absorbing...he at least has more than one power!!!!!!
O...and I think Peter killed Kaito! here's why!
1. The preview shows peter and adam being bunkmates...I can only assume that peter doesn't really know who he is at that point...and they become friends obviously...if adam truly is the puppet master...then it would make sense for him to send someone to kill Kaito!
2. There are only 3 people that we know of that have the power of regeneration...Peter, Claire, and Adam. Now we know its not Clair obviously...and it can't be adam because he says..."I knew they would send someone...but i didn't think they would send you!" So either its a new character...or someone put peter up to it!
So...what do you think?

