In the Korean and English version, the pigeon's name is "Jack." It is different in almost every version.
Hawk Moth calls the position Fred was in a tragedy, which is a reference to one of the two main genres of plays (the other being comedy). A tragedy similar to the episode is William Shakespeare's "Macbeth" as Chris was similar to Macbeth due to the fact he stole a role from someone.
In several releases for this episode, Fred's and Chris' miming is called "pantomiming." Pantomime is actually a form of British theatre that takes place around Christmas and involves throwing candy at audiences. Miming - while it can be comedic - is very different; miming does not involve using the voice or using props.
In order to animate the Mime's miming, the animators would animate him with the objects but make the objects invisible.