Wrigglers are creatures in Get Ready. 

a wriggler.

Appearance Edit

They are yellow caterpillar-like creatures with brown and black spots on their sides, flowers on their heads, black noses, and little purple-pink boots. When aggravated, they turn red and their flowers loose their pedals. They are Bug types. 
Upset wriggler

an upset wriggler.

Behavior Edit

They are highly carnivorous and try to eat smaller creatures they find. Once swallowed, the creature sinks into its digestive fluid, which acts like a mixture of transparent putty, Jell-O, and water. Depending on the wriggler's size, which can be as big as a school bus, Wrigglers are very hard to outrun so it's best to stay out of their way altogether.