Sprag

Sprag is a special Grineer mini-boss unit who appears on the Earth node of Operation: Gate Crash, who is one of the two units who hold the Void Key necessary to close the Void Portal. She possesses a jet pack identical to that used by Hellions that grants her excellent mobility, and can use her Manticore Axe and other special melee abilities to engage Tenno in close combat. Sprag is always seen with her sister mini-boss, Ven'kra Tel.