Once you've unlocked the PX41 serum, you'll be able to transform into
Evil Minion. While in this mode, you'll be able to destroy anything in
your path. When you're faced with a challenge that requires you to have
an insanely high Despicable bonus, or you need to plow past a tough
obstacle so you don't have to cash in Gru tokens to continue, these are
the times you'll want to activate the Evil Minion. Just remember you can
only use it every few hours so use it with care.