τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
P. and V. διάπυρος (Plato, timae. 58C; Euripides, Cyclops 631), V. καυστός (Euripides, Cyclops 633), ἐγκεκαυμένος (Euripides, Cyclops 393), κεκαυμένος (Euripides, Cyclops 457).
