Mr. Candle is an adult male humanoid with grayish brown hair tied back in a ponytail, large, pierced ears, and blue eyes. He wears a light blue dress shirt, green vest, red tie, khaki slacks, and black shoes.
In "Mr. Candle Cares", Mr. Candle advises the students of Echo Creek Academy about their potential future careers. In his one-on-one session with Star Butterfly, he asks her personal questions about her relationship with Marco Diaz, and he makes it clear that her future as queen of Mewni is set in stone. He also tells Marco that his future revolves around being prime janitor of "Garbage Island."
When Marco follows Mr. Candle into the school bathroom, he discovers that Mr. Candle is actually working for Star's ex-boyfriend Tom to make sure that Star and Marco's relationship is purely platonic. Marco later gets Mr. Candle to blow his cover by pretending to be "smooch buddies" with Star. At the end of the episode, he is seen giving advice to Brittney Wong before Tom contacts him, telling him to abort his mission. He proceeds to leave through his office window on a flying file cabinet.
In "Red Belt", Mr. Candle briefly appears in Marco's dream, asking him about his future.
In "Collateral Damage", he is still serving as the Echo Creek Academy guidance counselor, despite being from another dimension. He tries helping the students deal with the loss of "Otis the Opossum", but succumbs to those feelings himself.
- Theme Song (season 2)
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