That's a rather difficult question; "Planet X" is a temporary title that may refer to any planet that may or may not exist, or does not have a permanent designation. Therefore, as "Planet X" may be any newly found planet that has yet to be confirmed, it may have nearly anything on it. For a while, Pluto was referred to as "Planet X," but was then verified and given a permanent name.
Believers of the Nibiru Cataclysm Theory sometimes claim that "Planet X" is the name NASA has given to "Nibiru," a mythical planet-like object, as part of a conspiracy/cover up. There is no scientific foundation for this "theory."
Planet X was a hypothetical planet which was searched for after the discovery of planet Neptune. `Planet-X` does not exist.
Planet X does not exist - it was a hypothetical planet.
No, Planet X does not exist.
No
Planet x is the planet behind Pluto which is commonly reffered to as Selena but is not yet a planet(or clarified planet).
There is no "Planet X". See links.
The name of planet X is Nibiru
Nowhere. There is currently no planet called planet X. It is a lie
Planet X does exist but there are about 3 Dwarf planets that have simularities to Plznet X. Planet X has not yet been discovered.
There is no Planet X, so no, it did not.
Planet X does not exist.
Planet X was nothing because it does not exist and never did.