Background Understanding the complex interplay between emotional intelligence and behaviour patterns among adolescents holds a pivotal role in shaping their developmental trajectories and overall well-being. Adolescence, marked by rapid physical, emotional and cognitive changes, is a critical phase where emotional skills and behavioural tendencies are particularly malleable. Purpose The study investigates the interplay between emotional intelligence and behaviour patterns among adolescents in Gujarat and Maharashtra, India. The research objectives encompassed assessing emotional intelligence levels, exploring gender differences and examining the relationship between emotional intelligence and behaviour patterns. Methods The research design employed ex post facto methodology, collecting data from 740 adolescents across CBSE schools. Validated measures for emotional intelligence and criminal propensity were utilized. Results The results revealed the impact of gender, regions and their interaction on different dimensions of emotional intelligence and criminal propensity. While some dimensions were significantly influenced by these factors, others remained unaffected. The correlation analysis underscored intricate relationships between emotional intelligence dimensions and criminal propensity. Conclusion The study contributes valuable insights into the dynamics of Emotional Intelligence and Behaviour Patterns among adolescents, highlighting the need for targeted interventions and support systems. These findings hold implications for educators, parents and policymakers in fostering Emotional Intelligence development and curbing potential Behavioural concerns among adolescents.