"Caesar. He was caught by pirates who sent a ransom note and asked for lot of silver (a few tonnes but can’t remember the exact number). When the silver was delivered, Cesar said that he’ll “raise an army and kill the lot of you.” To which the pirate’s laughed.
Once Cesar sent word to Rome, he took a few Legions to the pirate’s home base and literally wiped out the entire base and got the ransom back."