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Doctor Spectrum (Marvel) — First appearance, key issues & comics · Cape Zone

Doctor Spectrum portrait

Character/Marvel

Doctor Spectrum

Billy Roberts

15 appearancesSince 1974

Part of the Doctor Spectrum mantle · 6 known bearers →

Doctor Spectrum first appeared in Giant-Size Defenders #3 (1975-01), published by Marvel. 15 appearances are indexed across 6 series.

Also known as Billy Roberts

Character history

Key issues

1 issue

Giant-Size Defenders
#3
first appearance
1975-01-00

Across the catalog

Appears in

6 series

The Avengers
1963–1996
3 issues →
Giant-Size Defenders
1974–1975
3 issues →
Marvel Super Action
1977–1981
3 issues →

The Avengers Annual cover

The Avengers Annual

1967–1994

1 issue →

MMTCape Archive 2008

Marvel Masterworks: The Defenders

2008–2024

1 issue →

GMOCape Archive 2025

Giant-Size Marvel Omnibus

2025–2025

1 issue →