Tohl Narita: “Designing fish kaijus hardly works out well. It is not that it doesn’t go well in designing or sculpting one, but I can’t get into it because I can easily imagine the outcome of the finished film. These are the designs I drew while trying to draw whatever variations I came up with.”
I think Narita means, as it was hard to film the action of fish kaijus in water with technology of the time, how they had looked in the finished films tended to put a damper on his motivation to design one.
In the case of Gubila, however, I think they managed to avoid a mess that could have happened to tokusatsu scenes in water as Gubila had a drill on the tip of its head and the fight with Ultaman unfolded after it appeared above ground by moving through the ground with the drill from the sea bed it dug into while the scenes in water were filmed with a puppet.
As I previously wrote, it is said that the design of Gubila was based on the filefish and the drill on the turban shell. It is also explained that, as remodeling Gavadon (B) for Gubila was initially being planned, Narita’s primary design of Gubila had been drawn on that assumption although it was redesigned and newly sculpted in the end.
Tetsuo Yamamura says in a book that the hair planted on top of the costume was made from a broom cut short. He seems to have seen the costume placed in the storage of the Tokyo Bijutsu (Art) Center (abbreviated as Bisen) with its drill removed after the filming.
The sound Gubila makes is said to have been duplicated from the high-pitched segment of the equivalent of Balgon that appeared in the 1966 Daiei movie “Gamera vs. Balgon” while it is unknown why the sound of a Daiei kaiju was used for an Ultra kaiju although I don’t believe this is a rare case.
Incidentally, Balgon was a kaiju sculpted by Ryosaku Takayama, and it is said that its costume that looks rather thin for a movie kaiju shows it was made by Takayama with his method of sculpting TV show kaijus. It is known that Takayama was also involved in Daiei tokusatsu movies including “Daimajin.”