List of comic book supervillain debuts

Columns: Character / Team | Year Debuted | Company | Creator/s | First Appearance
Hyathis | 1961 ( February ) | DC | Gardner Fox | Justice League of America vol . 1 # 3 | Kanjar Ro | 1961 ( February ) | DC | Gardner Fox | Justice League of America vol . 1 # 3 | Hector Hammond | 1961 ( March ) | DC | Gil Kane , John Broome | Green Lantern vol . 2 # 5 | Goom | 1961 ( March ) | Marvel | Stan Lee , Dick Ayers , Jack Kirby | Tales of Suspense # 15 | Matter Master | 1961 ( April ) | DC | Gardner Fox , Joe Kubert | The Brave and the Bold ( vol . 1 ) # 35 | General Zod | 1961 ( April ) | DC | Robert Bernstein , George Papp | Adventure Comics ( vol . 1 ) # 283

Example questions:
What month during the 1960 's did the 96th greatest comic book supervillain of all time debut ? | What is the name of the comic book villain who made their first appearance in a science fiction/suspense anthology in the 1960 's ? | Which of the comic book characters created by Gardner Fox in the 1960 's was portrayed by Dylan Neal in Arrow ? | What comic did they archenemy of Silver Age Hawkman first appear in in the 1960 's ? | Which DC comic book villain created in the 1960 's is commonly associated with Superman ?

Answers:
October | Grottu | Professor Ivo | The Brave and the Bold | General Zod