"Croc is the pseudonym used by a French creator of role-playing games. Croc's games are edited by Siroz (a homophone of the French word cirrhose, meaning "cirrhosis"), now called Asmodée éditions, French for Asmodeus. Croc met the founders of Siroz (Nicolas Théry, Éric Bouchaud and Laurent Tremel) in the "20 Naturel" RPG club of Vélizy (near Versailles) in the mid-1980s at secondary school (high school).
Croc's games are characterized by much imagination, originality and satirical humor. Several of his games also explore the human condition, and have a surprisingly optimistic, humanist core, despite their often violent world. One of his games, In Nomine Satanis/Magna Veritas (1989), led to the less controversial English-language game, In Nomine."
Source: Wikipedia, "Croc_(game_designer)", available under the CC-BY-SA License.