Igesi, Gas Tank Warframe, that evolved into Toxin and Gas Succubus/Siren, that lures enemies into their demise through asphixiation.
She would have both defencive capabilities and periodical high mobility, in similar fashion to Wukong's Cloadwalker.
Her weapons would be Enverinara - grinlok like rifle with alt-fire that shoots short range, high velocity gas catchmoon-like projectile; and Datura - Slash & Gas Warfans that on heavy attacks transform into two segmented razor blade whips, gaining massive range and unique animation for this move.
And also sorry for quality of photo in advance.