Device for general purpose augmentation - "ACUMA"? (GPT-3 invented the name)

Well the general idea was a singular device which could be styled however the wearer wanted and also used a singular power supply (like a large battery and/or possibly something else) and have stuff added to it (like a tail or something). Those would probably not be the best fit for that. I mean possibly they could work but I’m not 100% sure. If you just add like rotation sensors on someone’s joints that’d probably be more accurate