Famously, he prophecied that dogs would eat the flesh of Jezebel.  
The book of Malachi ends with a prophecy that this man will return.  He informed Ochozias that the injuries the latter suffered in a fall would prove fatal, and sent a letter to Joram which stated that Joram's whole family would be killed by a plague.  God commanded him to anoint two kings, Hazael of Syria and Jehu of Israel.  This Thesbite first appears in 1 Kings 17, where the Lord tells him to dwell by the brook Cherith and then go to Zarephath, where he stayed with a widow whose tiny store of flour and oil miraculously sustained them both.  Famously, he prophecied that dogs would eat the flesh of Jezebel.  FTP, name this man who defeated the prophets of Baal, who was fed by ravens and appointed Elisha his successor before ascending to Heaven in a chariot of fire.
The book of Malachi ends with a prophecy that this man will return.  
Elijah or Elias (but in no way shape or form Elisha)