From Destinypedia, the Destiny wiki
Exploder Shanks have been outfitted with high yield explosives by their Fallen creators, and sent to destroy themselves near strong opposition. Originally employed by the House of Wolves, they were later adopted by all the Houses in the Solar System. The Wolves' model have less conspicuous explosives, better integrated in their chassis, while the models seen with the House of Dusk and later syndacates have red hot bombs more crudely strapped onto their chassis.
Exploder Shanks will explode when they approach an enemy or if shot at, similar to a Cursed Thrall or a Vex Fanatic. They are usually sent out in groups, alone or with other Shanks. They can be detected from their constant beeping sound, and will gather energy for a split second before detonating on their own. Thanks to their flight, they can be considerably more dangerous than other suicide units.
List of appearances