It is revealed that Bubblegum has been sabotaging Finn 's plans because they wo n't work .
However , they are soon attacked by goo monsters , and Finn and Jake think that Bubblegum 's candy helper James ( voiced by Andy Merrill ) is hindering their rescue .
Bubblegum is revealed that Bubblegum has been sabotaging Finn 's plans because they wo n't work .
However , they are soon attacked by goo monsters , and Finn and Jake think that Bubblegum 's candy helper James ( voiced by Andy Merrill ) is hindering their rescue .