CTRPT

The abbreviation of counterpart. Your counterpart is someone closely related to you, whether it's real or fictional. You can have counterparts in video games as well. Counterpart may be hard to abbreviate, but think of counter and part, and put the abbreviation of both of the words and combine them together. Now you have CTR (counter) and PT (part) as CTRPT for counterpart.

1. One of my friends is my CTRPT.
2. Gabrielle is the CTRPT of her rival Paige.
3. Kami and Piccolo are known to be CTRPTs.