Their last battle royale in 1962 earned the two adversaries an exalted spot in pop culture, so there is little surprise that interest in the upcoming rematch in the new film “Godzilla vs. Kong” is high. Aficionados of old-school Japanese kaiju, or monster, films are especially keen to see whether this bout between giant gorilla Kong and dinosaur-like sea monster Godzilla ends with a definitive winner. But that likely will be anybody’s guess, says William Tsutsui, the Edwin O. Reischauer Distinguished Professor of Japanese Studies and visiting professor of East Asian Languages and Civilizations, who has had a borderline fixation with the reptile armed with atomic breath since boyhood. His 2004 book, “Godzilla on My Mind,” provided an in-depth look at the character and its cultural impact. This semester, Tsutsui is teaching an East Asian studies course that explores the rich history of Japanese monsters, including the violent Godzilla. Tsutsui spoke to the Gazette about the 67-year-old brute and his course, and handicaps the fight.