Changeling should start with "a disguise"

[Solenoid]

The changeling already killed someone and stole their identity in order to get on the station. It was YOU!

Exactly! And thus I want their 1st form to be a rando :P

Then use a character with appearance and name set to random.

To be fair, you can't make yourself roll changeling only as a random character. I think it'd be cool if you'd get a random appearance as a changeling, or at least have the option to assume one.