In the Dungeons & Dragons fantasy role-playing game, the assassin bug is a type of vermin creature.
The assassin bug first appeared in White Dwarf #12 (April 1979). The assassin bug appeared in the original first edition Fiend Folio (1981).
The assassin bug appeared in second edition under the "insect" heading in the Monstrous Manual (1993).
An assassin bug is a four-legged insect that reproduces by implanting eggs into living human hosts.