Golfy is the "nerd" of the Monster Balls gang that originally invaded  St. Damon's School for Boys.

 

Being the little scientists that he is, Golfy theorized that he could chew his way into a human brain and take control over the body.  With the assistance of his fellow Monster Balls, Golfy took control over Brent's body and used him as a decoy to capture more prey for the clan.

 

Image from Monster Balls!

Golfy hopes Brent doesn't have to sneeze.