Monster crab

The monster crab is a super-sized crustacean instigated by the experimentation of Dr. Chu Sing Ling.

History
A monster, 8 foot tall crustacean that resides on Moitu Island, a result of Dr. Chu Sing Ling's growth bacterium affecting one of the local crabs. In the beginning, a scientist is seen checking up on animals in their enclosures. When opening a door, he finds something terrifying and crashes are heard before closing it. He then calls for help as the giant crab breaks through the door, pokes its right claw out, and emerges from its enclosure. In his office, the scientist gets his gun and shoots it, but the bullets bounce of its hard shell. After he escaped from the crab, the latter breaks out of the building and noticed a guard. The guard, seeing its shadow, turns in horror to see the giant crab and shoots at it. The crab breaks his gun, grabs him, and pulls him away before killing him. Three other guards shoot at the crab, but failed as the giant makes its way into the sea and escapes.

Later, either a second crab or the same individual is seen roaming the island as a watchdog. While Race hides, it sees it fight a giant spider, much to his shock. It's likely the crab won as it appears alive and well when Hadji, Jonny, and Bandit saw it while hiding. It's likely the crab died when the island exploded.

Appearances

 * Jonny Quest (1964 TV series)
 * 124. Terror Island

Trivia

 * The giant crab is seen as a silhouette in the title of the episode.