I was struck with sudden inspiration for this original riddle. I'm sure you puzzling pros will have this one solved quick.
A flightless bird is always my foe
A circus performer causes me woe
A mystery man is my enemy
A troublesome feline likes pestering me
All of these things are found in one place
I'm not embarrassed but I still hide my face
Who or what am I? (The correct answer should also include what each line is specifically referencing.)