I had real hatred with Venture I didn't have to fake it. That sweet loathing just poured out of me whenever I saw his pathetic face! I just-I just wanted to kick his ass! I wanted to build a machine to kick his ass! I wanted to BUILD AN EMPIRE TO HOUSE THE MACHINE TO KICK HIS ASS!!
~ The Monarch.
An Archenemy is the main enemy of the antagonist. The reason why the particular hero stands out more than the rest varies; they may be the villain's strongest enemy, be the complete antithesis to the villain, have strong connections with their villain's past, pose the greatest threat, or may be the most recurring hero like the Big Good or the Right-Hand enforcer or even the Rival.