Crystalloid Compound



The Crystalloid Compound was, as the name suggests, a prison compound used by the Crystalloids to hold some Rubberoids hostage.

The doorway was guarded by a dragon-like beast.

Superboy and Krypto easily entered the prison and freed the hostages, and Krypto even made a new friend with the dragon-like beast.

Appearance
The Adventures of Superboy
 * King Superboy (1968)