you cant get in a controlanater by pressing O and you cant attach stuff 2 your sack person
1 thing thats wrong heres the right answer first go to create mode then (be 2 player)put ur entrance at an angle then turn ur controler off then when ur player has disappeared turn it back on and u should be plasma or fire (but remember to pop ur sack to!)
PEOPLE ARE STUPID!!!You can't attach anything to sackboy!!!!!!