The original engineering themed frame is here, the creator of bouncy castles (RIP bounce pad) himself - Booben!
Release date: 2013-05-17
Passive: Vauban inflicts 25% extra damage with his weapons and abilities against enemies that are incapacitated and unable to move.
Tesla Nervos - Deploy a roller drone that attaches itself to enemies and delivers bursts of arcing electricity to anything in the immediate area.
Minelayer - Cycle through four deployable mines: Tether Coil, Flechette Orb, Vector Pad and Overdriver.
Photon Strike - Drop a targeting beacon that calls in a devastating laser artillery strike.
Bastille - Erect a containment field to capture enemies and suspended them in stasis, stripping their armor. Hold to collapse all Bastilles into a single damaging vortex.
Acquisition: Vauban’s main blueprint can be purchased from the Market. Vauban’s component blueprints can be bought from the Nightwave Offerings.
Don’t have much insight into the French Lieutenant’s Warframe, though I recognize he’s very strong on any mission where running about like mad is not the goal.
I do wish vector pads didn’t work on Tenno.
On those rare occasions I use him, I pair him with the Kuva Chakkhurrr, since enemies in Bastille are just hanging around waiting for their headshot, and ones in Vortex like a nice little AoE.