Monster spider

The monster spider was one of the mutant animals that was kept by Chu Sing Ling.

History: This arachnid was one of the animals that Chu experimented with his bacteria, turning it about 8 ft. in height.

When first introduced, it resembles a tarantula, while demonstrated as one of Chu's pets locked in a cage, including a lizard. At first amazed by this, Quest is given a look at a normal spider in a small box by Chu, explaining his motive. Dr. Quest, however, didn't agree to his work as it's dreadful, so Chu threatened him to choose to care for his pets or will die by being devoured by his pets after the cages set to automatic mode are finished.

A second spider is seen roaming in the island outside as a watchdog. It even clashed with a giant crab, much to Race's shock. It's possible the spider died as the crab reappears alive and well.

Next, when time is up, Race arrived in time at the lab to force Chu to untie Quest. After a guard appeared, Jade appeared and knocked the guard out, disappointed with Race for not listening. After Chu escaped through a window and the door became locked from the outside, the cages open, freeing the spider and lizard. When the spider got out, Hadji, Jonny, Bandit riding a bulldozer broke in and crashed into the spider, killing it.

Trivia

 * The spider's screeches resembles a bat's.