Character Name: Entrapta
Choice: Monster
Action: Entrapta has been assisting the Resistance and her fellow Mirrorbound with magitech, including some illusion/disguise devices and building off of tech the Resistance has been implementing (or trying to implement) already.
Overall Effect: One the one hand: positive! As discussed here she would have been able to make significant improvements to several aspects of the Resistance's magitech, most notably the radio hijacking facilities.
On the other hand, however, I have been warned that her endeavours with radio hijacking could potentially have the side effect of a magic blackout, and Entrapta will not be making any effort to avoid something like that because she'd like to see that happen for herself – if anything she will be deliberately beefing up the magic usage to encourage that outcome. That said, I have no idea whether the ultimate result of something like that would be a blanket positive or negative!
Proof: Asking for help collecting materials for her work; finetuning the radio with Elliot; getting some help from Morgan with putting the radio together.
She hands out some of her Dorch-safety magitech to other Mirrorbound here and here.