Eglon was a Mobite king who was grossly overweight, during the time of the Judges. In the 12th century king Eglon allied with Ammonites and Amalekites and attacked Israel.
He captured Jericho and subjected the tribes of Ephraim and Benjamin for 18 years.
When the Israelites cried out to the Lord for help, He raised up Ehud, a Benjaminite. It was by Ehud the Israelites sent their tribute to Eglon.
Ehud hid a dagger under his clothes on his visit to king Eglon, and during a private audience with Eglon, Ehud drew the dagger and killed the king. Ehud escaped and got back into Israel, where he raised an army and defeated the Moabites (Judges 3:12-30).
Next person in the Bible: Ehud