There are multiple Deviants you can find and use while playing through Once Human. These are helpful creatures you can use in combat or keep at your base to gather resources. One of the more difficult Deviants to find is the Grumpy Bulb.
The Grumpy Bulb is a rare Deviant that only appears if you go out of your way for it, and there’s a low chance it could even appear for you. What makes the Deviant unique is how you find it, and if you don’t know the exact location to look for it in Once Human, tracking the Grumpy Bulb can be troublesome. If you find the Grumpy Bulb, it becomes an asset for you in combat when fighting hordes of enemies.