Candle Holders are characters with candles on their heads. This includes Gorgonzola and Stilton, although the rest haven't been shown on screen before. The candle holders seem immature, aggressive, sparta characters, although it was only Gorgonzola who showed deep emotion in The Apprentice Games.
A fanmade character, named Clamder who is Chowder's younger sister, always holds a candle in the night, however she is not immature or sparta. She is barely aggressive at all. The dark scares her.