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Around the globe, Gryllus (Grill , Grilo , Grelo ) is a rare largely boy's, but seldom girly forename. The forename Gryllus is characteristic of Romania, where it is a rare male name, Philippines, where it is a very rare dominantly male, but uncommonly female name, and Nigeria, where it is an extremely rare female name. Much more frequently, Gryllus is the last name as well as the forename.
Gryllus is also a name for the fictitious and mythical characters: Gryllus , the mythological Greek character, Bruta animalia ratione uti.