Sometimes I wanna pretend Im batman, so I might wanna say "Ok alfred"

Sometimes I wanna pretend I'm a guardian fighting space aliens and I need to say something like "Ghost" to call my robot friend.

Sometimes you may want to just say "nope" to avoid getting trolled by people saying ok google near you.

Anything is possible with old spice so can we change the voice command for android wear instead of saying ok google to something else?