Elemental and elusive, Wisp is both guardian and gateway.

"Invisible in the air and swift on the ground, she moves like the wind. This is Wisp. Summoner of the ethereal.
Her grace is only balanced by her destruction. Do not get lost in its wake, Tenno."

Wisp is the 40th warframe, released alongside the Jupiter tileset rework in May of 2019, and quickly became a favorite among fan artists beginning even before her release, and most often depicted with her Gaoth alternate helmet.

External Links

Wisp wiki page: https://warframe.fandom.com/wiki/Wisp