Bigtop Burger's newest recruit, Billie is not quite used to the strangeness of the job as Penny or Tim are. She speaks with a consistently dry tone even when she regularly witnesses Steve's weirdness. Her deadpan doesn't stop when she's shocked or surprised; such as seeing a smaller version of Steve shrink even more into nothingness, or when facing Bigtop Burgers' rival Zomburger. She's not particularly sad or serious, but mostly gives off a tired vibe.