Designer: allegedly designed by Tatsuo Kuroda (it remains uncertain)
Sculptor: Shimada Art Craft in the site of Toho (first costume); Ex Production (the rest of the costumes)
Actor: Haruyoshi Nakamura, Yukihiro Kiyono, Kunio Suzuki (depending on the episode)
Voice: Kazue Takahashi (actress)
Booska is a friendly monster who was starred in the TV tokusatsu comedy series “Kaiju Booska” (1966-1967: 47 episodes) produced by Tsuburaya Productions around the same time as “Ultraman” while they aired on different channels.
Incidentally, the Chinese characters used for kaiju in the title represent “pleasant beast ()” instead of “mysterious beast ()” the Chinese characters of the term kaiju usually stand for, so it is sort of a phonetic pun from the kaiju referring to mysterious beast.
Booska came into being as Daisaku Tonda, boy who likes inventing things tried to make an iguana he kept as a pet into a Godzilla-like giant kaiju with the use of his self-made nutrient Chlopara that was supposed to increase the size of the iguana by 300 times.
Whereas the substance failed to make the iguana a Godzilla-like kaiju, it finally managed to make a monster emerge with almost the same height and the same level of intelligence as humans.
Booska also has various super abilities including strong power described as “100 ton power” and flight ability in the air.
As to his personality, he is not fond of fighting, gentle, good-natured and easy-going while he is loved so much as a good friend by kids including Daisaku he lives with.
Moreover, he is often found to use his own phrasal expressions referred to as the Booska language such as “barasa, barasa” (to express happiness), “shio shio no pā” (for sadness) and “puri puri no kiririnko! ka! ka! ka!” (for anger) along with the Japanese language he is so fluent at (he also understands English to the extent that he can read a letter written in the language).