Mercenaries, by definition, are not loyal to any one side. They will fight for whoever offers the highest rewards, regardless of the consequences. In the world of DeFi, Mercenary farmers are well known for wreaking havoc on protocols. They keep moving between protocols that offer the highest rewards, and often dump rewards they earned quickly in case the token value is diluted. As a result, they are capable of destabilising the ecosystem while profiting from the chaos.