Well, its way after the fact, but here was what I was working on for the Batman Beyond idea. I just never was able to finish it because I am busy with other stuff:
(traced from a drawing of Gen 13)
Its Poison Ivy for Batman Beyond, maybe something like Ivy 2.0
She was a Nano Technician (scientist who works on small cell like robots) who accidentally became filled with them, perhaps replacing her blood. These tiny robots took over every part of her body, like the worms in Futurama, and allow her to not only have heightened strength and speed, but also allow her to control most electrical/mechanical/robotic devices. And since now, in the Batman Beyond Future, most of the world is covered with electronic/robotic devices she can almost control the whole world. Another small power is the ability to control the nanites (thats how you say it right? Nanites) in her system to alter her heir color, eye color, skin color, heal her, grow her fingernails, grow out her hair, alter her finger prints, things like that. (maybe even something with skin cells that would normally flake off leaving evidence of her, something like stopping that or altering the cells to be different so they can't trace it back to her or something). I don't want her to be too powerful though, so she cannot do things like alter her face to look like someone else, alter her body to look like someone else or to grow giant, alter anything non tech (or anything that doesn't comply with her nanites), alter technology to change into other things (she can't make a crane transform into a robot). Her nanites have limitations.
Her costume looks like Ivy, not on accident, she took inspiration from Ivy after her accident and discovering the similarities between the two women from different eras.
But she has also added some tech to her costume so that she will always have some sort of tech near by to use as a weapon, sort of like Batman's utility belt.
One thing I don't know is her evil plans. Does she want to simply take over the world, does she believe the world should be nothing but tech? Down with the trees? Or does she have other plans? Does she want to make everything nano tech because, in her head, she would control everthing and she is the most qualified (like Hulk's Leader in Gamma World)? Or, in her head, is Nano Tech the way of the future, and can cure hunger, disease, loss of limbs, homes, and everything, and she wants to spread this world view and save everyone from themselves?
