Anguirus - ayn-GEAR-uss
Mogera - moh-GEAR-uh
Varan - VARR-unn
Dogora - DOH-guh-ruh
Ghidorah - gih-DOOR-uh. With or without the King depending on the moment, but I never use the shortened "GHEE-DRUH."
Baragon - BARE-uh-GONE
Ebirah - When I was a kid, I pronounced it "EE-BEE-RUH," but over the past five years or so I took to thinking of it as "EBB-ih-ruh." Sounds more crustacean-like to me.
Minilla - minn-ILL-uh. Never understood why so many fans use the Godzilla's Revenge "MINN-YUH" variant.
Kamacuras - kuh-MACK-urr-USS
Kumonga - koo-MON-guh
Gezora - geh-ZORR-uh
Ganime - GAN-ih-MAY
Kameba - kuh-MAY-buh
Hedorah - head-DOOR-uh
Gigan - GUY-gun
King Seesar - King SEE-SAR
Biollante - BUY-oh-LANT-ee
Destroyer - Destroyer
Megaguirus - MEGG-uh-GEAR-uss