Archangel

Sub-Mariner Comics (1941) #1

First Appearance: Sub-Mariner (Namor) — solo series debut

The first issue of Namor the Sub-Mariner's Golden Age solo series. One of the earliest Marvel (Timely) Comics published, predating the modern Marvel age by decades. An extremely rare and historically significant Golden Age key.

X-Factor (1986) #5

First Appearance: Apocalypse (En Sabah Nur) — cameo

First cameo appearance of Apocalypse, the immortal mutant conqueror who would become one of the X-Men's greatest enemies. A key Bronze Age issue marking the debut of one of Marvel's most powerful villains.

X-Factor (1986) #24

First Appearance: Apocalypse (En Sabah Nur) — full appearance

First full appearance of Apocalypse, following his cameo in X-Factor #5. Establishes the full threat of En Sabah Nur, one of the X-Men's most powerful and enduring villains. A key Bronze Age issue.