Gamera the Brave (2006)

Rating on IMDb: 6.7

Plot
Precipitated by the premise that Gamera self-destructed to destroy several Gyoas in 1973, the tale picks up thirty three years later, when the son of one of the survivors of that incident finds an unusual egg, from which a baby turtle hatches. The boy, Toru, raises the creature, quickly realizing it as remarkable in that it hovers and breathes fire. The creature quickly outgrows the house, is relocated by Toru and his friends to maintain secrecy, and then disappears.

Concurrently, many shipping disasters occur in the area, the cause of which is the kaiju Zedus (ジーダス), which soon thereafter rampages through the city. It corners Toru and his friends, but the boy's former pet, now significantly larger, intercedes. The young Gamera is wounded in the fight and captured by government officials, who hook the creature up to a machine which infuses it with liquid derived from mysterious red stones found in the vicinity of egg, and which scientists theorise gives Gameras their power.

Zedus attacks again, and the Gamera, now larger, goes out to battle him. The human characters determine that the still-immature Gamera must consume the red stone which Toru had found with the egg in order to fully realize its powers. The egg is located and, with some difficulty, delivered to Toru, who throws it into the Gamera's mouth during the battle. The Gamera's power of rocket-propelled flight manifests, and it defeats Zedus by breathing a fireball at it. The kaiju escapes further government investigation with Toru's assistance, and flies off as the boy wishes him farewell.

Monsters

 * Gamera
 * Toto
 * Zedus