Phantom

A phantom is perceived to be an immaterial being. Often synonymous to ghost, the word "phantom" could also refer to a vision of a living person or an inanimate object. Visionss are often spoken of as containing phantoms as the agents.

---

Two US jet engine military aircraft are called the Phantom, the FH-1 and the F-4.

---

There is also a comic strip called The Phantom.