Question

the bold word is a \front swabi\ (subordinating conjunction). does the highlighted comma belong?
wherever captain america goes , fans are eager to meet him.
keep the comma remove the comma

Explanation:

When a subordinating conjunction (like "Wherever" here) starts a complex sentence, the subordinate clause (before the comma) is followed by a comma to separate it from the main clause ("fans are eager to meet him"). This is a standard rule for fronted subordinate clauses. So the comma belongs.

Answer:

Keep the Comma