Well.. not quite. J’onn has had enough time to cobble together a physical appearance (and the bare bones of an identity to go with it) between encounters with the resident sentient species to blend in, but he hasn’t yet gotten close enough to really get to interact with them until--at least, until now.
John Jones, PI, ‘investigating’ a site nearby to where he first appeared on Earth, due to.. unfortunate and unforgettable circumstances.
(It should be noted that he’s barefoot, and barely covered considering how cold out it is with his button-up and slacks combo. He doesn’t realize that he needs shoes while outdoors yet, but he’ll figure it out. Probably.)
He folds his hands behind his back, perking up as he senses a human approaching. He wasn’t really expecting to encounter one, but.. well, if he’s going to live here, he’s going to have to interact with humans at some point or another.
He waits until the other is within eyeshot and then.. chooses to wave. Good job.