Kama-Kama
From Sonic Retro
Kama-Kama (カマカマ) is a badnik featured in Sonic CD. It is based on the mantis.
These little guys roll around, and when they see Sonic, fling their sickles at him. These sickles can be deflected by spinning. When broken down due to age, they are slower and do not have their sickles. Without their weapons, they are defenseless.
Sonic CD PC Manual Description
The Robot Mantis launches spikes at enemies who wander into its territory!