The elf also appeared in the original Monster Manual (1977).

The winter wolf appeared in first edition in the original Monster Manual (1977).

He also appeared in the original Monster Manual II (1983).

Gygax wrote them to take a break between writing the original Monster Manual (1977) and Player's Handbook (1978).

Demogorgon appeared in the original Monster Manual (1977).

The mimic made its first appearance in the original Monster Manual (1977), by Gary Gygax.

The foxwoman and the wereshark first appeared in the original Monster Manual II (1983).

The xaren appeared in the original Monster Manual II (1983).

The miner first appeared in the original Monster Manual II (1983).

The quasit, a frequent servant of demons, also first appeared in the original Monster Manual.