Terrarist
With that upper black hose I suspect she’s huffing the oxygen from the cannister.
I go with “the Filteress”
That’s it, I don’t think we’ll find a better one!
I’m assuming there’s a light under that top dome cap, and that the box is there to regulate the chamber environment, making this more of a vivarium than a terrarium.
Given that she’s using it as an oxygen source, the term vivarium, meaning “place of life”, doubly applies.
Her evil name then, should be Vivaria
To make it extra evil, Vivi for short.
(ducks for all the Final Fantasy fans that now want to kill me)
I think this would be where “evil” falls into a grey area.
The Forestbathesse
Dr Bloom.
Ivy, hipster edition
She’s just the exo-suit providing mobility to the highly intelligent alien plant being named Pistil Stamen.
Mother Nature