Description from original post (created 2016-03-03 19:58):
Vor and Lech Kr- erm... I mean the Cabal Shield Bro- dangit...
Sprag
Ven'kra Tel is a special Grineer Field Boss unit encountered in Orokin Sabotage missions where Grineer are the dominant enemy, who is one of the two units who hold the Void Key necessary to close the Void Portal. She possesses a blue jet pack identical to that used by Hellions that grants her excellent mobility, and can use her Vulkar and other ranged special abilities to engage Tenno from afar.
http://warframe.wikia.com/wiki/Ven'kra_Tel
Sprag is a Grineer Field Boss encountered during Orokin Sabotage missions where Grineer are the dominant enemy. She 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.
http://warframe.wikia.com/wiki/Sprag