ANAHEIM – Dr. Bunsen Honeydew and his chirpy assistant Beaker showed up for an impromptu performance at the California Adventure on Sunday, leaving many in the crowd wondering: man, machine or puppet?

“I'm pretty big on Oscar the Grouch. I'm a huge pessimist, but I'm a lot nicer about it than he is. I wish I could be that mean sometimes.” — Zach Campbell, doorman/musician, Lawrence “Beaker from the ...