My Top Ten Best UnSubs

Archenemy of Aaron "Hotch" Hotchner.

Archenemy of Jason Gideon. Second most prolific killer, I believe. However, he is so diabolical and a mastermind, and also has a good motivation...like a very evil version of Mr. Freeze.

Zugzwang

Also, played by Mark Hamill, himself.

Complete monster.

Very successful and most prolific killer. Prince of Darkness. Tragic backstory.

Complete xenophobic monster. Great actor to play him too.

Great villain. Pure evil monster.

family annihilator

Archenemy of Spencer Reid alongside Cat Adams.

Successful kidnapper and murderer.

Great villain.

Great villainess.

Delusional killer.

Archebemy of Derek Morgan.

David Rossi's archenemy.