Bulky Friends are an enemy from the "Your Caring Friends" faction. Bulky friends will randomly walk around the room fairly quickly. Periodically they will stop and create energy ball between their hands. They will hold it for a short time and then toss it in Cordy's direction.
The ball will bounce off of walls and obstacles, gaining more speed over time, and damage Cordy upon contact. The energy ball has a limit to how long it can exist, and upon reaching the end of its time the bulky friend will stop and start to prepare another one.
He will toss it at Cordy just at the moment when the previous ball ceases to exist.