Chuck Brewster is an Art Director for REKT and is also a Builder for REKT (In some REKT videos, they refer to the other half of the warehouse as Chuck's Workspace). He also will do Safety at Orange Base. He is never in the main cast for REKT but does make lots of cameos and is also in Fail Time! when the video is focused on anyone from Hi5 or only the REKT crew. He also appears regularly in Matthias Vlogs and in Hi5 Studios Vlogs.
He is also sometimes seen fixing or painting the interiors of Blue or Orange Base.
Some have said he looks like the oldest member of Hi5 Studios.