This study aimed to adapt the Malevolent Creativity Behavior Scale (MCBS) to Brazilian Portuguese and to estimate validity evidence based on the internal structure and relationships with other variables and reliability. The sample consisted of 382 Brazilians aged between 18 and 71 (M = 32.18, SD = 12.89), of which 68.06% were female. Through the content validity coefficient, the judges' analysis indicated the adequacy of the items. In addition, confirmatory factor analysis demonstrated the adequacy of three factors, all with good reliability indicators. The convergent validity of the MCBS with the SD4 and the PSCD indicated that all correlations were positive, involving Machiavellianism, sadism, and psychopathy. Men presented significantly higher levels of all three malevolent creativity when compared to women. Thus, the results suggest that the MBCS adequately measures malevolent creativity in the Brazilian population.