When the Lord Jesus Christ goes before us in battle to defeat a powerful enemy - any enemy - it will be a result of prayer and fasting.

Fallen entities who masquerade as various persons, aliens etc...are evil spirits of various ranks and abilities. They are routed and defeated when prayer is accompanied by fasting. Remember this equation, patriots:

ego < prayer + presence of Holy Spirit +self denial + fasting = victory.

This is why Jesus told his disciples that certain powerful evil spirits could only be defeated by prayer + fasting.