The Quick & Dirty

Name: Makoto Yamazaki
Gender: Male*
Species: Youkai (Doppelgänger)
Age: roughly 140
Height: 176cm*
*may vary depending on whose shape he takes
Occupation: Police Officer
Wiki: here

Please Note:

As a Doppelgänger, Makoto needs to take the appearance of somebody else in order to fulfill any bodily functions such as drinking, eating or if he wishes to interact with the human world (or to use the restroom.) His go-to shape for these occasions is that of his best friend, Doctor Akira Takahashi, who doesn't mind Makoto posing as his twin.

While his appearance and innate skills switch to those of whoever he is copying, his personal inclinations such as likes and dislikes remain the same. (An easy tell between him and Akira is that Akira likes to smoke while Makoto detests it.) Generally he tries to ask for permission before copying somebody whenever possible.

That said, let me know if you want him to copy your character in a thread - or to opt out of it, depending on the situation!