The Frog Leader is a hostile Mob in Mechanic Miner.
Attacking or nearing the frog leader will aggravate it, and cause the whole pack to attack you. The frog leader moves faster than normal frogs, and because of its jumping movement it's able to climb smaller vehicles.
Upon killing the frog leader you will be rewarded with a higher amount of experience than from normal frogs. In addition you'll have a chance of receiving the following upon harvesting the corpse of the leader frog: