The Vampires

>> Ladies and gentlemen, let me tell you. If the vampire does not reflect in the mirror and does not cast shadows, can it be seen on the sonar? and location.
thank you.

It is possible if the vampire is present in the material world as a solid body (the ability to float the fog is attributed to them). Sound waves are elastic mechanical oscillations, and the absence of reflections in the electromagnetic spectrum will not affect them.