I think instead of having multiple personalities, I am actually like a sock puppet to many super heroes from the past, though, none that recieved press.
ONe I have is EC (ergonomically correct). I'm designed specifically to do a variety of tasks and services, I'm designed to fit the way that is kindest to your/my body.
Another is The Kidney. I can walk into a bad vibe area, suck in the oogies and eebies, process that and spit out joy. At least take the rough edges down a bit, encourage breath.
Yet another doesn't have a name yet, and his trick is he needs to find his super-power. He employs group participation. Silly guy.