He was raised as an orphan on a secret island hideout of a criminal combiné, where he learned all his criminal skills, including developing his special masks, before killing the head of the combine. Diabolik's true name had never been revealed in the series, and he does not know it himself. Diabolik took his name from a dangerous black panther that the head of the combine killed on the secret island. From issue #3 of the series, Diabolik is aided by his "moll", Eva Kant, who has gained an increasing role as his partner and lover.