Little piece of advice: anything you include in your current ISOT list, be it a person or an object, make sure it at least gives the heroes a fair advantage over enemies like Evil Morty. Give them something that could help them outsmart him for once--i.e., outtrolling the troll. There's dozens of ways that can be done.
I think it has something to do with the numberpad, but I don't know which combinations.