The Arachnina was originally bought by Cortex as a pet for Nina to play with. Nina, on the other hand, used her evil genius to modify the creature into a weapon of mass destruction, creating a giant blade-wielding spider robot. It can even turn into an 8-legged, laser-firing, mechanical form for good measure.
- Thanks to Jeff Solway for the picture.
The Arachnina was called Spiderbot during development.