First appearance (advertisement) of Elvira - the earliest appearance on record is an advertisement, not a story.
First appearance (promotional) of Chester Cheese - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
First appearance (promotional) of Little Cheese - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
First appearance (promotional) of 'Mazing Man - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
First appearance (promotional) of Sigfried Horatio Hunch III - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
First appearance (promotional) of Guido Garibaldi - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
First appearance (promotional) of Denton Fixx - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
First appearance (promotional) of Brenda Valentine - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
First appearance (promotional) of K.P. Watson - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
First appearance (promotional) of Eddie Valentine - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
First appearance (promotional) of The Red Queen - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
First appearance (promotional) of Tik-Tok - the earliest appearance on record is a publisher promotion, not a story; a canonical story debut may come later.
The evidence
Claims here come from the story records for this issue, listed under Sources at the bottom of the file. Character hubs with full evidence tables are coming to this site.