In "The Miracle Smurfer", the main antagonist is named Dr. Charlatan. This surname is taken from the actual word "charlatan". A charlatan is a person who falsely claims to have a special knowledge or skill; a fraud.
The title "The Miracle Smurfer" is an obvious nod to the title of the film The Miracle Worker (1962).
In "The Miracle Smurfer", Sickly is the last of the pre-1981 Smurfs to debut in the cartoon series, debuting a few episodes after Weakling according to original broadcast date.