In Gojira, Dr. Daisuke Serizawa was a young colleague of paleontologist Kyohei Yamane, betrothed to his daughter Emiko Yamane, and friend to Hideo Ogata (Steve Martin in Godzilla, King of the Monsters!). He saw active combat during WWII, and it was in battle that he lost his right eye. After the war and now donning an eye-patch, he intensely studied the element oxygen, ultimately discovering a destructive chemical reaction that split oxygen atoms into fluids he labeled the Oxygen Destroyer. He later destroyed his research and used the device against the first Godzilla, but committed suicide at the same time, so that nothing like the Oxygen Destroyer can ever be made again.
Serizawa did make a somewhat true return in the 1998 and 1999 video games Godzilla Generations and Godzilla Generations: Maximum Impact, for the Sega Dreamcast system. Dressed in his climactic underwater gear, this giant-sized version of Serizawa is a bonus fighter who can be unlocked after completing certain other monsters all the way to the Tokyo level's three stages. He activates the Oxygen Destroyer as his special fighting move, which completely demolishes any structure or military vehicle in its striking distance. His eye patch also converts into a Maser Cannon.