Gabara

Gabara is a Kaiju from the 1969 Godzilla film: All Monsters Attack. Gabara is typically an underrated andd disliked Kaiju. But in Xavier Z he gets an extreme revamping in order to make him possibly the strongest Kaiju on Earth besides Godzilla himelf. Gabara is confirmed to be one of the major villains for the series and will have something to do with Xavier's dark past and somewhat holds a psychic grip on Xavier.

Story
Gabara is a nightmare Kaiju, he lived in an alternate realm where Godzilla did not exist. Gabara could only exist in a dreamy version of Monster Island. being trapped within this world granted Gabara defeat over and over again. Gabara would attempt to project himself out of the dream to go into the real Showa world. Sadly, he was only in his spirit form. But as the X-Fighters and Z-Fighters did all the time traveling, Gabara used them as his ticket into the real world. Communicating with them through they're nightmares and slowly feeding off of they're fear to become stronger and build his real body. Gabara would then attempt to take over to real world and rule it but as always Godzilla but now with the aid of the X-Fighters and Z-Fighters would stand in his way.